This bicycle part is manufactured by PILO LTD, using CNC technology.Our production facility is ISO 9001 2015 certified.Made of 6061 T6511 ASTM B221 billet aluminum.Coating:hard black Anodized.Axle thread:M12X1.75.Mounting Hardware included.Comes with S52 Locknut.Compatible with the following models:Santa Cruz:- Stigmata 2.- Stigmata 3.- Quincy 1.