ITEM NAME:Bicycle Quick Release Nut M5 Screw Non-slip Aluminum Alloy Nut Descriptio n Description: Made of aluminum alloy material, light weight, high strength. Easy to install and durable. With non-slip washer,is not easy to fall off. Anti-slip surface,unique appearance,corrosion-resistant. This nut is specially designed for bicycle quick release lever. Specifications: Materialï ¼Å¡Aluminum Alloy Height:Approx.16mm/0.63inch Out Diameter:Approx.19mm/0.75inch Type: M5 Color:Black Package Included: 1 Piece Bicycle Hubs Nut Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks! We offer you what you need! Bicycle Quick Release Nut M5 Screw Non-slip Aluminum Alloy Nut.This nut is specially designed for bicycle quick release lever. Specifications:Materialï ¼Å¡Aluminum Alloy. With non-slip washer,is not easy to fall off. We'd like to settle any problem in a friendly manner.