v-belt pulleys Z-SPZ A-SPA B-SPB C-SPC MATERIAL:HT250 we can produce the whole series of taper bore v-pulleys,SPA,SPB,SPC,and SPZ,they are made of high-grade GG25 cast iron, delicate finish and assembled precisely, they can also be matched with BTL-BUSHING, easy on and off, practical utility. They are suitable tor all kinds of power transmission installation. V-BELT PULLEYS