Bolt Fixed Round Pulley v Shaped Pulley Durable For Round Belt Transmission Feature:1. The fixed bolt round pulley is made of aluminum alloy, which is strong and durable, effectively protect the machine.2. It is used for round belt transmission, the round belt transmission depends on the belt pressure and the circular pulley groove to generate friction, which is very flexible.3. Relieve the shock and vibration during operation, smooth movement, low noise, belt slippage when the load is too heavy, and protect the machine and motor.4. Round belt transmission is especially useful for some low-speed, low-power applications.5. Fixed Screw Round Pulley is to generate a round transmission belt by tightening the friction belt. Specification:Item Type: Bolt Fixed Round Pulley Material: Aluminum Alloy Purpose: Generating Round Belt Gear By Tightening Belt Friction List Packing:5 x Fixed Bolt Round PulleyNote:Please make sure the design size matches the size of the product before use. 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.