BellsofSteel 33mm Review: Uniform Kettlebells for Consistent Training
The BellsofSteel 33mm Competition Kettlebell is a gravity-cast, pro-grade weight designed for athletes and home gym users who demand uniform sizing and competition-standard features.
By Elvis Dicki
Updated October 20, 2026
For home gym enthusiasts and serious athletes, the kettlebell is a cornerstone of functional strength training, but not all bells are created equal. The BellsofSteel 33mm Competition Kettlebell is engineered specifically for those who prioritize form, consistency, and progression in their workouts. This gravity-cast kettlebell is designed to meet international competition standards, featuring uniform dimensions across weights and an ergonomic handle designed to reduce hand fatigue. It’s a premium piece of equipment built for the Girevik (kettlebell athlete) and the dedicated home user who wants their gear to support, not hinder, their training. The bottom line: this is a kettlebell for lifters who value a consistent feel and competition-ready features in their training tools.
Unlike many standard kettlebells that change size with weight, forcing constant technique adjustments, the BellsofSteel series maintains a uniform shell size. This key design philosophy means your snatch, clean, and swing form remains identical whether you’re lifting the 12kg or the 32kg model. Combined with its hollow-core construction that eliminates imbalance and rattle, this kettlebell is built for performance. It’s an investment for those who view their equipment as a long-term partner in strength development, suitable for anyone from a committed beginner progressing through weights to a competitor training for maximum repetitions.
Prime Bells of Steel Competition Kettlebell Pro Grade
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BellsofSteel 33mm at a Glance
| Specification | Detail |
|---|---|
| Brand | BellsofSteel |
| Model | 33mm (Handle Size Reference) |
| Material | Alloy Steel |
| Construction | Gravity Cast, One-Piece |
| Core | Hollow-Core (on specified weights) |
| Handle Diameter | 35mm (Competition Standard on 10-32kg & 48kg) |
| Key Feature | Uniform Size Across Weights |
| Special Features | Ergonomic, Portable, Color-Coded |
| Standards Met | GSU, IKFF, IUKL |
| Recommended Use | Lifting, Weight Training, Resistance Training |
Design and Build
The BellsofSteel 33mm kettlebell’s design is immediately distinguished by its professional-grade construction and thoughtful engineering. It is gravity cast as a single piece, a process that the manufacturer states creates an excellent surface finish and superior dimensional accuracy with no welding points. This one-piece build contributes to its durability and provides a balanced, seamless feel in the hand. The hollow-core construction, present on the competition-size bells (10kg to 32kg and the 48kg), is a critical feature that provides perfect balance and eliminates the distracting “kettle rattle” sometimes found in other designs, allowing for a more focused and stable lift.
Aesthetically and functionally, the bells are color-coded by weight, allowing for instant visual identification during a workout. This saves time and lets the user maintain their training flow. The most significant design triumph is the uniform physical size of the bell’s body across the entire weight range. Unlike traditional kettlebells where a heavier weight is physically larger, every BellsofSteel competition kettlebell from 10kg upward shares the same dimensions. This means a user’s hand position, swing arc, and overall technique do not need to be recalibrated when moving up or down in weight, a major advantage for skill development and consistent performance.
Performance and Features
Competition-Ready Handle and Grip
The handle is the primary point of interaction, and here the BellsofSteel 33mm shines. For the competition-standard weights (10kg to 32kg and the 48kg), the handle diameter is a consistent 35mm. This size is not arbitrary; it is the specification mandated by international kettlebell sport federations like the Girevoy Sport Union (GSU), IKFF, and International Union of Kettlebell Lifting (IUKL). This ergonomic diameter is designed to be comfortable for a wide range of hand sizes, reducing the risk of cramped knuckles and hand fatigue during high-repetition sets of snatches, cleans, and long-cycle exercises. The wider grip area promotes a secure hold, which is essential for both safety and performance.
Progression-Oriented Design
The product range is thoughtfully structured for progression. The lighter bells (4kg, 6kg, 8kg) feature a slightly smaller 34mm handle diameter. This “starter size” is intended to help beginners acclimate to the kettlebell’s feel and mechanics before transitioning to the full 35mm competition standard. It’s a nod to inclusivity, ensuring new users can build foundational strength and technique with a more manageable grip. This tiered approach supports a long-term training journey, from initial adaptation to advanced competition preparation, all within the same product ecosystem.
Standards and Balance
Adherence to international competition standards is a core selling point. Meeting GSU, IKFF, and IUKL specifications guarantees that the bell’s weight distribution, window size (60mm on competition bells), and balance are optimized for the sport of kettlebell lifting. This standardization ensures the bell behaves predictably, allowing an athlete to perform the maximum amount of repetitions in competition without the equipment itself being a variable. For the home user, this translates to a product that feels exceptionally precise and well-engineered, with a balance that supports clean, fluid movements in swings, get-ups, and presses.
Setup, Support and Ownership
Setup for a single kettlebell is inherently simple: unbox it and begin training. The value in ownership comes from building a set over time. Because of the uniform sizing, adding a heavier or lighter bell to your collection requires no adjustment period for your technique; the feel and footprint remain familiar. The manufacturer, Bells of Steel, emphasizes customer satisfaction and support in their product features, stating their “legendary customer support is always ready to assist you.” While specific warranty details are not listed in the provided data, this commitment suggests a focus on post-purchase service.
As a standalone piece of equipment, it requires no assembly, software, or maintenance beyond general care for fitness gear. Its portable nature, listed as a special feature, means it can be easily moved and stored, making it suitable for home gyms of any size. For those looking to expand, the consistent design and color-coding make it easy to organize a complete set. Potential buyers should note that the available weight increments are specific to the manufacturer’s line, and the premium build, while durable, represents an investment aimed at serious users.
What Owners Say
Owner feedback for the BellsofSteel Competition Kettlebell is overwhelmingly positive, reflected in its high average rating. Reviewers frequently praise the quality and feel of the bell, with specific mentions of its performance in technical lifts like cleans and snatches. One owner noted it was “the best one I have ever used” and felt compelled to replace their other kettlebells with the same brand. Another highlighted the quality and feel as superior to older kettlebells they had used, leading them to purchase additional weights. The sentiment consistently points towards a well-made product that enhances the training experience. The rating distribution shows the vast majority of reviews are top-tier, with no significant critical feedback present in the provided excerpts.
Pros and Cons
Pros
- Uniform size across weights supports consistent lifting technique.
- Hollow core construction eliminates rattle and provides a balanced feel.
- Color coding speeds up weight selection during workouts.
- Gravity cast one-piece build delivers a durable surface finish.
- Meets GSU, IKFF, and IUKL standards for competition use.
- Ergonomic 35mm competition-standard handle reduces hand fatigue.
Cons
- Lighter 4-8kg bells use smaller 33mm handles and solid construction.
- Premium build may exceed the needs for casual home users.
- Limited to specific weight increments that may not suit all training plans.
- The design is specialized, potentially less versatile for unconventional uses.
Who Should Buy It (and Who Should Skip It)
The BellsofSteel 33mm is an ideal choice for specific users. First and foremost, it is for the kettlebell sport athlete (Girevik) training for competition, as it meets all relevant international standards. Secondly, it is perfect for dedicated home gym users who are serious about their technique and plan to progress through a range of weights; the uniform size is a major long-term benefit. Finally, strength enthusiasts who perform high-volume kettlebell workouts will appreciate the ergonomic handle designed to minimize hand strain.
This kettlebell is less suitable for the casual or first-time buyer who is only looking for a single, general-purpose weight for occasional use; the premium features and cost may be unnecessary. Those who prefer kettlebells of varying dimensions for different exercises might not appreciate the uniform size. Additionally, individuals needing very specific weight increments not offered in this line should look elsewhere. For a broader look at specialized fitness and tech gear, our Tech Gear section offers more insights.
Final Verdict
The BellsofSteel 33mm Competition Kettlebell stands out as a professionally oriented tool built to exacting standards. Its core advantages—the uniform size, competition-spec handle, hollow-core balance, and one-piece casting—are not mere marketing points but tangible features that directly impact training quality and consistency. For anyone whose fitness regimen relies heavily on kettlebell movements and who plans to train with multiple weights, these design choices eliminate variables, allowing the athlete to focus solely on strength, endurance, and technique.
While its feature set is specialized and its value proposition is strongest for serious practitioners, the execution is top-tier. Owner reviews confirm that the promised quality and feel are delivered in practice. It represents a buy-once-cry-once approach to fitness equipment. For those building a home gym focused on functional fitness, it is a cornerstone piece worthy of consideration alongside other quality-of-life upgrades, much like selecting the right ergonomic seating for long work or study sessions. If your goal is efficient, consistent, and progressive kettlebell training, the BellsofSteel 33mm is designed to meet that challenge head-on.
FAQs
What does “uniform size” mean for kettlebells?
Uniform size means that the physical dimensions and shape of the kettlebell’s body are identical across different weights. For example, a 12kg bell and a 32kg bell from this series will be the same height, width, and have the same size window. This allows you to use the exact same lifting technique, hand placement, and swing arc for every weight, eliminating the need to adjust your form as you progress. It’s a significant advantage for skill development and consistency in training.
Are these kettlebells suitable for beginners?
Yes, but with a consideration for the specific model. The BellsofSteel range includes beginner-friendly options. The lighter bells (4kg, 6kg, 8kg) are designed with a slightly smaller 34mm handle to help new users get accustomed to the kettlebell. Beginners can start with these and then progress to the competition-standard bells (10kg and above with a 35mm handle) as their strength and technique improve. The quality construction is beneficial at any level, but a complete novice might find more value starting with the lighter “starter size” bells.
What is the difference between the 33mm and 35mm handle?
The handle diameter refers to the thickness of the kettlebell’s grip. In this product line, “33mm” is a model name that references the starter size handle. The actual specifications are: the lighter bells (4-8kg) have a 34mm handle, and the competition bells (10-32kg & 48kg) have a 35mm handle. The 35mm diameter is the international competition standard, designed to be ergonomic for a wide range of hand sizes during high-repetition sport lifting. The slightly smaller handle on the lightest bells is intended to be more manageable for those new to training.
Can I use this for general fitness, or is it only for sport training?
While it is engineered to meet sport competition standards, it is an excellent tool for any style of kettlebell training. The balanced hollow-core construction, comfortable handle, and durable build enhance all common exercises like swings, Turkish get-ups, cleans, presses, and snatches. The features that benefit a competitor—consistent feel, reduced hand fatigue, and perfect balance—also improve the experience and safety for general fitness enthusiasts. It is a high-quality tool suitable for any serious training context, similar to how professional-grade resources can benefit any learner, as seen in our roundup of the best foundational guides in other fields.
About the author
Elvis Dicki writes reviews and buying guides for CyberSecLabs.