Features:1) European standard:a) V-belt pulleys for taper bushes: SPZ/1, SPZ/2, SPZ/3, SPZ/4, SPZ/5, SPZ/6,SPZ/8, SPA/1, SPA/2, SPA/3, SPA/4, SPA/5, SPA/6, SPB/1, SPB/2, SPB/3,SPB/4, SPB/5, SPB/6, SPB/8, SPB/10, SPC/3, SPC/4, SPC/5, SPC/6, SPC/8,SPC/10b) V-belt pulleys for solid hubc) Adjustable speed v-belt pulleysd) Flat belt pulleys2) American standard:a) Sheaves for taper bushes: 3V, 5V, 8Vb) Taper bushed sheaves: 3V-1, 3V-2, 3V-3, 3V-4, 3V-5, 3V-6, 3V-8, 3V-10, 5V-2,5V-3, 5V-4, 5V-5, 5V-6, 5V-8, 5V-10, 8V-4, 8V-5, 8V-6, 8V-8, 8V-10, 8V-12c) Sheaves for QD bushes: 3V, 5V, 8Vd) Sheaves for split taper bushes: 3V, 5V, 8Ve) Split taper bushed sheaves: 3V-1, 3V-2, 3V-3, 3V-4, 3V-5, 3V-6, 3V-8, 3V-10,5V-2, 5V-3, 5V-4, 5V-5, 5V-6, 5V-8, 5V-10, 8V-4, 8V-5, 8V-6, 8V-8, 8V-10,8V-12, 8V-14, 8V-16f) Sheaves for 3L, 4L or A, and 5L or B belts: AK, AKH, 2AK, 2AKH, BK, BKH, 2BK,2BKH, 3BKg) Adjustable sheaves