Stone Derailleur Pulley Wheels
- Material: POM high strength resin
- Bearing: 689-2RS steel bearing
- Thickness: 8mm
- Inner diameter: 6mm (compatible with 4/5mm)
- Color: black wheel with black cover, black wheel with red cover
- Fit for: 9/10/11/12 speed, for Shimano and Sram Derailleur(most)