KTPL 12T/14T Rear Derailleurs Pulley

*12T narrow-wide tooth guide wheel weight: 11.4g 

*14T narrow-wide tooth guide wheel weight: 12g 

*Material: AL7075-T6 aluminum alloy CNC machining

* installation size: 6MM/5MM/4MM 

*12T outside diameter 50.3mm

*14T outside diameter 57.5mm

*Color: Black

*Bearing: steel ball / forest / ceramic Palin 

*Application scope: All conventional transmissions

*This product is made of AL7075-T6 round bar CNC. It is finished with diamond knife and has a diamond-like metal texture. The appearance of the product is excellent. Adopting the Japanese imported steel ball lining, the rotation has no resistance, which greatly reduces the frictional resistance and improves the riding efficiency.