cogged V belt 1.uses pulley with smaller diameter, 2.we are a factory ,not a trading 3.property---anti-heat 4,best ... .5408V(25V0)25.423.72340 We are factory ,not a trading company!cogged V belt1,top rubber:(cr,HNBR) to protect the lining ... ;0086-15867065710 0086-576-83373128 skype;thegreatwallbelt01 thegreatwallelt03nancy wang cogged V belt