Bells of Steel
Bells of Steel Adjustable Competition Kettlebell (12–20.5 kg)
LiftEvidence pick: Best Adjustable Competition
A competition-shape steel shell that adjusts from 12 to 20.5 kg in 0.5 kg steps
- Best for
- Kettlebell sport and ballistic training where you want small progression steps without buying a full set.
- Skip if
- Quick changes mid-workout, or loads above 20.5 kg.
- For less
- Titan Competition Kettlebell (mid-range) — Same size and 35 mm handle at every weight, for consistent technique
Bells of Steel
Adjustable
12–20.5 kg (18 settings)
Amazon customer rating
4.7/5 from 67 ratings
Checked October 7, 2026
- Type
- Adjustable
- Weights available
- 12–20.5 kg (18 settings)
- LiftEvidence score
- 8.2 / 10
- Price band
- Premium
Affiliate link: LiftEvidence may earn a commission at no extra cost to you. Prices and availability are shown on Amazon. Disclosure
Quick verdict
LiftEvidence editorial assessment
A steel competition-shape shell with a 35 mm handle that loads internal plates from 12 to 20.5 kg in 0.5 and 1 kg steps — 18 settings in one bell. It keeps competition geometry, so snatches and jerks feel like a real bell, while letting you progress in small steps. Changing weight needs an Allen key and takes about a minute.
Specifications
Source: manufacturer listing
As stated by the manufacturer (website or Amazon listing; conflicts are noted). Information that was not available or could not be confirmed is omitted or marked “Not reliably published”.
- Brand
- Bells of Steel
- Model
- Adjustable Kettlebell (steel shell)
- ASIN
- B0D38BLJQW
- Type
- Adjustable
- Weights available
- 12–20.5 kg (18 settings)
- Sold as
- Single adjustable bell with plates
- Handle diameter
- 35 mm
- Body finish
- Steel competition shell
- Same size at every weight
- Yes
- Adjustment
- Internal plates; Allen key and hex wrench
Sources: Amazon.com listing. Checked October 7, 2026.
Who it suits
LiftEvidence editorial assessment
Best suited to
- Kettlebell Sport
- Small Spaces
- Swings & Ballistics
Kettlebell sport and ballistic training where you want small progression steps without buying a full set.
Less suitable for
Quick changes mid-workout, or loads above 20.5 kg.
Strengths and drawbacks
LiftEvidence editorial assessment
Strengths
- Competition geometry and 35 mm handle
- 0.5 kg progression steps
- Replaces 18 bells
- Steel shell, no plastic
Drawbacks
- Tool needed to change weight
- Range limited to 12–20.5 kg
- Only 67 Amazon ratings
- Premium price
Handle, use and durability
LiftEvidence editorial assessment
Our interpretation of the specifications, stated construction and recurring customer feedback. We have not independently tested this product.
- Handle comfort
- Good
- Swings, cleans and snatches
- Excellent
- Finish durability
- Good
- Consistency across weights
- Excellent
- Build quality
- Very Good
- Durability
- Very Good
Evidence and product claims
Scientific evidence, independent testing and manufacturer claims are different kinds of information and are not equivalent.
Independent testing
No independent laboratory testing of this model identified.
Manufacturer claims
18 settings from 12 to 20.5 kg; competition shape with 35 mm handle (manufacturer listing).
Marketing statements; not independently verified.
Customer feedback
Source: Amazon customer reviews · checked October 7, 2026
Amazon customer rating
4.7/5 from 67 ratings
Checked October 7, 2026
Customer ratings reflect user experience on Amazon. They are not LiftEvidence ratings and are not controlled evidence.
Recurring themes
Owners find it well built — one notes it does not come apart mid-snatch — and easy to adjust.
Commonly praised
- Solid build
- Easy adjustment
Editorial scores
LiftEvidence editorial assessment · 0–10
8.2/ 10 · LiftEvidence score (weighted)
- Handle quality · 20%
- 8.5
- Build & finish · 20%
- 8.5
- Accuracy & consistency · 15%
- 8.5
- Versatility · 15%
- 8.0
- Specification transparency · 10%
- 8.5
- Owner feedback · 10%
- 7.5
- Value · 10%
- 7.5
Editorial judgements from the manufacturer's specifications, stated construction and recurring customer-review themes, using the same criteria for every product in this category. They are not measurements, and we have not tested this product. How we evaluate
Compare with other kettlebells
- REP Cast Iron Kettlebell
Cast iron · 1–32 kg (16 kg reviewed)
- Titan Competition Kettlebell
Competition (steel) · Range of competition weights (16 kg reviewed)
- Lifeline Kettlebell
Cast iron · Multiple weights (24 kg reviewed)
- Amazon Basics Kettlebell
Cast iron · Many pound weights (25 lb reviewed)
- Bowflex SelectTech 840
Adjustable · 8, 12, 20, 25, 35, 40 lb
- REP Adjustable Kettlebell
Adjustable · 40 lb model reviewed (heavier versions sold)
- Yes4All Powder Coated
Cast iron · 9–88 lb (listing default: 22 lb)
Where to check the price
LiftEvidence is not the seller. These links lead to the Amazon listing for this model; availability differs by country.
Bells of Steel Adjustable KB
Check price on Amazon