The Profile Galaxy Spline Drive sprocket is manufactured from 7075 Aluminum in the USA. This sprocket requires no sprocket bolt, instead it has a hardened CrMo steel insert in that matches up to the 48 splines in your Profile 22mm BB spindle. We have 25, 28 & 30 tooth versions available. Black only.*compatible with 22mm spline drive spindles only
** Please note, due to Profile's anodising process, colours can be slightly miss matched.
