Aluminum Alloy 13T Bicycle Rear Tire Derailleur Pulley Guide Wheel Bike Accessory

Feature: 1. Made of high quality aluminium alloy and steel material, firm and durable, provide longer service life. 2. Compatible with most rear wheels on the market and supports 9 10 11 speeds. 3. Easy to install and operate, only need a few steps, can effectively save your time. 4. Applicable to most conventional variable speed systems, meet your different needs. 5. Light in weight and small in size, portable and will not bring burden to your bicycle, provide better use feeling. Specification: Item Type: Tire Derailleur Pulley Material: Aluminum Alloy Body+Steel Bearing Weight: Approx. 18g 0.6oz Color: Black Fitment: for most conventional variable speed systems.. Package List: 1 x Tire Derailleur Pulley2 x Steel Bearing