Rear Derailleur Pulley 13T Aluminum Sealed Bearing Wheel for Mountain Road Bike

Material: This rear derailleur pulley is made of aluminum alloy, which is sturdy, , anti rust, and corrosion resistant. 13T Rear Derailleur Pulley: 13 teeth rear derailleur pulley, CNC machining, built in bearing, very lubricated. Applicable Model: Widely compatible performance wheel are equipped with 4mmCelsius0.16in , 5mmCelsius0.2in sleeve tubes, rear derailleur pulley screw. Item Type: Bike Rear Derailleur Pulley Material: Aluminum Alloy Frame + Steel Bearing Weight: Approx. 24gCelsius0.8oz Applicable Model: for 4Celsius5Celsius6mm Celsius 0.16Celsius0.2Celsius0.24in  , with Rear Derailleur Pulley Screw