1、The screw fixed round pulley is made of aluminum alloy, which is strong and durable, protect the machine effectively. 2、It is applied to round belt transmission, the round belt transmission depends on the pressure of the belt and the round pulley groove to generate friction, which has good elasticity. 3、Relieve shock and vibration during operation, smooth movement, low noise, belt slips when the load is too large, and protect the machine and motor. 4、Round belt transmission is particularly useful in some low‑speed and small‑power transmission applications. 5、The screw fixed round pulley is to generate round belt transmission by tightening the friction of the belt. Item Type: Screw Fixed Round Pulley Material: Aluminum Alloy Purpose: to Generate Round Belt Transmission by Tightening the Friction of the Belt 5 x Screw Fixed Round Pulley