Poly V-belt pulleys:
Type J,L,M,K standard or OEM

V belt Pulleys:
Type: Europe standard SPZ   SPA   SPB   SPC, US standard 3V,5V,8V,A-B-C-D.
Bore: Taper bore, stock bore, finished bore, bearing bore and for locking device bore.
Material:Grey cast iron GG25, Ductile cast iron GGG40,  GGG50, GGG60, Carbon steel St37-2, C45,S355J2G3…etc.