Bells of Steel Ergo Rubber Hex Dumbbells
Welded-head hex dumbbells from 5 to 100 lb, with a 28 mm handle on the light ones and 34 mm on everything else.
Specs
| Material | 50% virgin, 50% recycled rubber |
|---|---|
| Head construction | Welded |
| Handle diameter | 28 mm (5 to 10 lb), 34 mm (15 to 100 lb) |
| Handle finish | Chrome |
| Knurling | Moderate |
| Tolerance | ±3% |
| Sizes | 5 to 100 lb, in pairs |
| Warranty | 3 years residential, 1 year commercial |
These figures are copied from Bells of Steel’s own published specs and were last checked on 2026-08-31. Manufacturers revise products without notice, and variants differ. Confirm anything your decision depends on with Bells of Steel before you buy.
Choose this one if
- You want fixed dumbbells and have the space for them
- You want welded heads rather than bolted ones
- You want to buy the weights you use and skip the rest
The detail
Welded rather than bolted heads is the specification to check on any hex dumbbell, and it is the reason to pick these. A bolted head works loose over time; you notice it as a rattle, then as a wobble, and eventually the head comes off in your hand at the top of a press. Welded heads cannot do that. Bells of Steel states it plainly in the spec table, which many brands do not.
Fixed dumbbells are the opposite trade from an adjustable set like the PowerBlock Pro 100 EXP or Ironmaster Quick-Lock. Fixed dumbbells are instant — grab and go, no screws, no pins — and they take an entire wall. Adjustables take one shelf and cost you fifteen seconds a set. Buying by the pair means you can populate only the weights you actually use.
The handle step from 28 mm to 34 mm at 15 lb is worth understanding. Thin handles suit light weights, where grip is not the issue and a fat handle feels clumsy; thicker handles spread load across the hand once the dumbbell is heavy enough to strain your fingers. The transition point is a judgement call and 15 lb is a reasonable one.
Moderate knurl on chrome is right for dumbbells. Aggressive knurl on something you hold for sets of twelve tears hands, and smooth chrome under sweat slips.
±3% tolerance is loose — 1.35 lb on a 45 lb dumbbell — and it is normal for rubber hex dumbbells, where the rubber head is moulded rather than machined. If exact matching between the pair matters to you, this is not the category for it.
A 3-year residential warranty is decent; the rubber heads are what will wear, and half-virgin rubber holds up better than pure recycled.