Bicycle Chain Guide MTB Mountain Bike Single Disc Chain Guard Protector

Feature: 1. Made of aluminum alloy, CNC machining, high strength and lightweight. 2. Suitable for 31.8mm 35mm seatpost Diameter E type mount. 3. Easy to install, safely keep your chain from dropping. Specification: Features: Made of aluminum alloy, CNC machining, high strength and lightweight. Suitable for 31.8mm 35mm seatpost Diameter E type mount. Easy to install, safely keep your chain from dropping. Specifications: Material: Aluminum alloy + Plastic Compaitibility: 31.8 35mm seatpost Dimension: Approx. 71 * 68 * 65mm 2.8 * 2.7 * 2.6in Weight: Approx. 53g 1.9oz Package List: 1 * Chain Guide Package List: 1 * Chain Guide