DARKLINE ZE NUT Black Edition – Black Matte Steel Ballstretcher

ZE NUT Black Edition does not try to look like a conventional ballstretcher. That is exactly the point.
Created in Paris by DARKLINE in 2017, ZE NUT turns a massive piece of steel into an instantly recognizable object: a genuine hexagonal nut, heavy, compact and entirely magnetic.
Its matte black finish pushes the industrial character even further. Darker, tougher and more graphic, ZE NUT Black Edition has a strong physical presence.
ZE NUT is machined from solid steel and built in two separate halves. It is positioned around the scrotum and then closes using powerful integrated magnets.
No screws. No Allen key. No tools.
The two halves naturally align and lock together magnetically. Fitting and removal remain quick and straightforward, while the mass of the steel provides the firm downward pull expected from a serious heavy ballstretcher.
The hexagonal geometry is not merely decorative. Its flat surfaces allow substantial weight to be concentrated within a relatively compact volume, while the edges and contact areas are carefully finished to avoid aggressive angles against the body.
The matte black finish gives ZE NUT a completely different presence from the brushed steel version: darker, more technical and almost mechanical. Its resistant coating also protects the surface while preserving the deep, uniform appearance of the piece.
Two internal diameters allow ZE NUT to be selected according to body size, while the different heights determine the amount of weight.
For the same internal diameter, the taller the ZE NUT, the heavier it becomes.
Choose your diameter first, then choose your weight.
From 275 g to 840 g depending on the version, ZE NUT allows you to move from a relatively moderate load to a much more substantial level of traction.
An original DARKLINE Paris creation since 2017.

**Features**
Original DARKLINE Paris design
Created in 2017
Solid steel construction
Matte black Black Edition finish
Hexagonal nut-inspired shape
Powerful magnetic closure
No screws
No Allen key
No tools required
Two-piece construction
Carefully finished flat surfaces and edges
Two internal diameters
Several heights and weight levels

**Dimensions and weights**
Internal diameter 36 mm
H20 × Ø36 mm: 275 g
H30 × Ø36 mm: 450 g
H40 × Ø36 mm: 600 g
H56 × Ø36 mm: 840 g
Internal diameter 39 mm
H20 × Ø39 mm: 320 g
H40 × Ø39 mm: 640 g
Material: solid steel
Finish: matte black
Care: clean after use with a product suitable for the finish and dry thoroughly.