Belt pulley, 20 tooth, 8mm bore, for MXL belt

An all-aluminium timing belt pulley for MXL belt (0.08" pitch, or 2.032 mm) up to 0.25" (6.35 mm) wide.

This pulley has 20 teeth and an 8 mm bore.  A small number of NEMA 23 motors have shafts of this diameter.  The pulley can also be used to belt-drive M8 treaded rod or Tr 8 trapezoidal leadscrew.

It has two M4 grub screws (at 90° to each other), which require a 2 mm hex key (Allen key).  The pulley is 17 mm long overall, has a 16 mm diameter hub, and a flange at the opposite end.  Unlike rubbish aluminium pulleys often found on eBay, which have a flat flange than can chafe the belt, this is a well-made pulley, with an embossed flange, slightly rounded on the side facing the belt, and the hub is also chamfered.