Technical specifications of the black 41.5 kg adjustable dumbbells
- Reference: HR-41-5-P
- Composition: pair of adjustable dumbbells (2 dumbbells, bases included)
- Adjustable weight: from 4 to 41.5 kg per dumbbell
- Increments: 1.5 kg (26 settings per dumbbell)
- Adjustment: wrist rotation, dumbbell resting on its base
- Finish: matt black, corrosion-resistant
- Materials: cast iron, steel, sturdy aluminium
- Dumbbell dimensions: 44 x 19.5 x 19.5 cm
- Dimensions on base: 50 x 23.5 x 21.5 cm
- Handle: 13 cm long, 34 mm in diameter
What makes the difference
- One-handed adjustment. With the dumbbell on its base, a turn of the handle selects the load in 2 seconds.
- A size that follows the load. The dumbbell only keeps the selected plates: it stays very compact at low loads and only reaches 44 cm at 41.5 kg.
- 26 loads per dumbbell. From 4 to 41.5 kg, the equivalent of 26 pairs of fixed dumbbells.
- 1.5 kg increments. Fine progression, even on isolation movements.
- Matte black finish. Better protected against corrosion, plates less prone to deformation.
- Bases included. Storage and adjustment in the same place.
Why the matt black finish changes the lifespan
An adjustable dumbbell leads a hard life: sweat, friction in the mechanism, repeated knocks against its base. The coating is what takes all of that first. The matt black finish was chosen for that reason: it resists corrosion better than chrome, and the plates deform less over repeated re-seating.
The benefit is not cosmetic. On this kind of mechanism, a slightly deformed plate means an adjustment that catches, then becomes imprecise. By protecting the plates, you above all protect the accuracy of the selection system, year after year.
Adjustment by a simple wrist rotation
Rest the dumbbell on its base, turn the handle, lift: the load is selected. No screws to loosen, no plates to handle, no pin to reposition. This mechanism takes two seconds, which changes the very nature of your sessions: supersets, drop sets and circuit training become feasible without ever breaking the rhythm.
The 1.5 kg steps are fine enough to progress smoothly, especially on isolation movements where jumping from 10 to 12.5 kg at once often costs several repetitions.
26 loads per dumbbell, the equivalent of 26 fixed pairs
From 4 to 41.5 kg in 1.5 kg steps, each dumbbell covers 26 different loads. One pair therefore replaces up to 26 pairs of fixed dumbbells, in a footprint of 44 cm long with a 50 cm base. The maths adds up quickly, in space as much as in budget, as soon as you compare it with the price of a full rack.
The flat underside of the dumbbells gives them a solid seat on the floor and makes it easier to set them on your knees before a bench press. The feel comes close to that of a fixed dumbbell, where many adjustable models remain bulky and unbalanced.
Black version or chrome version: which to choose?
Both versions share the same mechanism and the same dimensions. Only the finish sets them apart:
| |
Chrome version |
Black version (this page) |
| Finish |
Chrome-plated |
Matt black |
| Corrosion resistance |
Standard |
Reinforced |
| Plate condition over time |
Standard |
Less prone to deformation |
| Load per dumbbell |
4 to 41.5 kg |
4 to 41.5 kg |
| Steps |
1.5 kg |
1.5 kg |
| Mechanism |
Wrist rotation |
Wrist rotation |
If you train intensively, in a garage or an unheated room, the black version is the one to go for.
Exercises and muscles worked
The 4 to 41.5 kg range covers light isolation as well as heavy compound movements:
| Exercise |
Muscles worked |
| Bench press |
Chest, triceps, shoulders |
| Dumbbell row |
Back (lats, traps), biceps |
| Biceps curl |
Biceps, forearms |
| Overhead press |
Shoulders, triceps |
| Goblet squat |
Quadriceps, glutes, abs |
| Dumbbell lunges |
Quadriceps, hamstrings, glutes |
| Romanian deadlift |
Hamstrings, glutes, lower back |
| Overhead triceps extension |
Triceps, shoulders |
| Dumbbell crunch |
Abs, core |
Usage and safety advice
- Always open the dumbbells from underneath. Incorrect opening can compromise the durability of the product and void the warranty.
- Do not drop these dumbbells on the floor: the selection mechanism is not designed to take drops.
- To change the load, rotate with the dumbbell resting on its base. Do not lift the handle, even slightly, during the rotation, at the risk of damaging the mechanism.
Complete it with the dedicated stand
The HR-41.5 stand raises your dumbbells to grip height. Its V shape lets you adjust the load while standing, and its central opening lets you pick the dumbbells up without leaning forward, which clearly reduces the strain on your lower back between sets.
Our guides: our 7 criteria for choosing adjustable dumbbells, 5 mistakes to avoid with dumbbells.
Frequently asked questions
What is the weight range of the black 41.5 kg adjustable dumbbells?
From 4 to 41.5 kg per dumbbell, in 26 settings with 1.5 kg increments: one pair replaces up to 26 pairs of fixed dumbbells.
How do you adjust the weight?
With the dumbbell on its base, a twist of the handle selects the load, then you lift: two seconds, with no screw to loosen and no pin to move.
Is the base included?
Yes, each dumbbell comes with its base (dumbbell on its base: 50 x 23.5 x 21.5 cm). The matte black finish resists corrosion better than chrome and protects the accuracy of the mechanism.
Does the dumbbell size change with the load?
Yes. Only the selected plates stay on the dumbbell, the others remain on the base. At low loads the dumbbell is very compact; at 41.5 kg it measures 44 x 19.5 x 19.5 cm.
Can the dumbbells be dropped?
No. The selection mechanism is not designed to absorb drops. Always put the dumbbells back on their base.
