Bike Guide Roller, 1 Pair 11t/13t Pulley Wheel Ceramic Bearing Rear Pulley Jockey Wheel Bike Guide Roller Road Bike Rear Derailleur Jockey Wheel Pulley(11T-BLACK)

• 【EASY TO CARRY】：This bicycle guide wheel pulley accessory is light in weight, small in size, and easy to carry and store. Support various speed changes.
• 【FINE WORKMANSHIP】： The bike rollers is anodized and the surface is polished. Therefore, it can be used for a long time with good performance.
• 【EXCELLENT QUALITY】：Our derailleur jockey wheels are made of aluminum alloy and ceramic materials, which are rust-resistant, corrosion-resistant, very strong, light and durable.
• 【SCOPE OF APPLICATION】： It is suitable for the use of 4/5/6 mm guide wheel screws. Provide you with a better riding experience.
• 【PRACTICAL ACCESSORIES】： It runs on smooth ball bearings and is an essential accessory for your bicycle. It can be applied to most mountain bikes.

Features: Adopting aluminum alloy and ceramic material, this product is very durable to use. Can be applied for most mountain bike. Supporting for various speed shifting. Suitable for use 4 / 5 / 6 mm guide wheel screws. Offers you a better cycling experience. Specifications: Item: Bike Guide Roller Material: Aluminum Alloy + Ceramic Colour: Black, Golden (Optional) Diameter: 4 cm / 1.6 inch (11 T), 5 cm / 2.0 inch (13 T) Weight: 21-23 g Package Included: 2 * Bike Guide Roller 2 * Installation Hole Adapter Tubes (Other things on the pictures are not included)