Aluminum Alloy Black Mountain Bike Hollow Crank Antidust Cover Bicycle Accessory

Features: 1. Made of good quality aluminum alloy material, durable and anti rust. 2. Can protect the crank from scratches, water and dust. 3. Double washer, compatible with ordinary hollow sprocket. 4. Tighten, seal and waterproof. 5. Can be applied for mountain bikes, road bikes, etc. Specifications: Material: Aluminum Alloy Color: Black Suitable Diameter: 22 24mm 0.87 0.94in(Approx.) Package Included: 1 * Crank Anti dust Cover 1 * Spare Waterproof Ring .