Features:
AL7075 aluminum alloy construction with steel bearing.
Compatible with 9/10/11 speed rear derailleurs.
Includes inner 5mm and 4mm shims (with one already installed in the pulley).
Lightweight and durable.
Specifications:
Material: Aluminum alloy + Steel bearing
Color: Black / Red (optional)
Teeth: 14T / 12T (optional)
14T Diameter: 58mm / 2.3in
12T Diameter: 50mm / 2.0in
Weight: 12g / 0.4oz
Package Size: 61 * 61 * 11mm / 2.4 * 2.4 * 0.4in
Package Weight: 18g / 0.6oz
Package List:
1 * Jockey Wheel