
REP Fitness KB-3100 Single Cast Iron Kettlebell
- Item Weight: 10 pounds
- Handle Diameter: 1.4 inches
- Material: Alloy Steel
- Part Number: KB-3100-10
Last refreshed Jun 30, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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ASIN: B075RQ9VY7Model: KB-3100Category: Kettlebells
Styles Available
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Overview
REP Fitness sells this cast iron kettlebell in single weight increments from 5 to 50 pounds, with a machined flat base and a smooth, lightly textured handle for swings, cleans and presses.
The one consistent criticism comes from a 50 pound buyer who found the handle too thick and the two-handed grip space too narrow for a secure hold, worth noting if you are buying at the heavier end of the range.
- Single weights from 5 to 50 pounds
- One-piece cast iron, no welds
- Smooth, lightly textured handle
- Machined flat base
Who it's for
Home gym users at any experience level wanting a single, no-frills cast iron kettlebell for swings, presses and carries are well covered here. Buyers at the 50 pound end who need a wide two-handed grip may want to compare handle dimensions against another brand first.
Pros and cons
- Smooth, comfortable handle reported across most weights
- Flat base stable for ground-based exercises
- Handle too thick for a secure two-handed grip
Performance notes
The one-piece cast iron construction has no welds to fail over time, and the flat machined base lets it sit stable on the ground for push-ups or renegade rows. The exception is a 50 pound buyer who found the handle thickness and grip width made a secure two-handed hold difficult.
Specifications
| Brand | REP |
|---|---|
| Model | KB-3100 |
| Item Weight | 10 poundslower than 66% of 36 kettlebells |
| Handle Diameter | 1.4 incheslower than 61% of 34 kettlebells |
| Material | Alloy Steel |
| Part Number | KB-3100-10 |
| Special Features | Rust Resistant, Wide Handle |
Closest rivals on specs
TopMade Adjustable Cast Iron Kettlebell Set- Item Weight 10 vs 12 pounds (-17%)
Frequently asked questions
What weight range does the REP Fitness kettlebell come in?
It is sold in single increments from 5 pounds up to 50 pounds.

