... according to customer's requirement.bolt on hubs for taper bush:SM1200,SM1600,SM2500.....taper bushing:1008.1108.1210...... pulleys:1) V-belt ... V-beltpulley specifications:1) European standard: a) V-belt pulleys for taper bushings: SPZ, SPA, SPB, SPC; up to 10 grooves ... standard: a) Sheaves for taper bushings: 3V, 5V, 8V b) Sheaves for QD bushings: 3V, 5V, 8V c) Sheaves for split taper bushings: 3V, ...