Yosoo 11T 13T Bike Derailleur Pulley Jockey Wheel Bicycle Aluminium Rear Derailleur Pulley Mountain Road Bike Gear Teeth Guide Wheel red 13T

The Rear Derailleur Pulley is made of aluminum alloy, so that it is very firm, lightweight and durable. Anti-rust and corrosion resistant. It run on smooth ball bearings, and it's a necessary accessory for your bicycle. There are four different colors for you to choose from, to meet different needs. Hope you will enjoy your cycling. Have a nice day. Specifications: Material: Aluminum Alloy Color: Black, Red, Golden, Silver Weight: approx. 13g, 16g Teeth: 11T, 13T (optional) 11T Diameter: approx. 40mm / 1.57" Hole Diameter: approx. 5mm / 0.19" 13T Diameter: approx. 49mm / 1.92" Hole Diameter: approx. 5mm / 0.19" Compatible: Suitable for 4/5/6mm spindle shaft rollers Package Included: 1 x 11T/13T pulley wheel