8mm Hex Key T-Handle Dual End Wrench Spanner, Metric CR-V Steel 2 Pcs M10x13mmx1mm The pinion gear aperture is

The pinion gear aperture is 6mm and the module is 0

The coupling is great replacement for your old or broken one

Fit for: 22-26mm tubes

used in pneumatic piping

8mm Hex Key T-Handle Dual End Wrench Spanner, Metric CR-V Steel 2 Pcs M10x13mmx1mm The pinion gear aperture is1. Constructed from forged and quenched chrome vanadium steel with a corrosion resistant chrome finish, high hardness and durable to use. 2. Have dual hex ends of different lengths that give you multiple options for working around obstructions. 3. T handle design provides a firm grip and achieves large torque. 4. The hex end is chamfered to slide easily into the fastener, reducing wear on the wrench and fastener head. 5. Applied in DIY hand making,