This product is a high-quality screw washer, suitable for hubs, can play a very good elastic fixation, with stronger locking force, can well protect accessories! It is made of high-quality aluminum alloy material, which is and does not rust. It will meet your needs is an accessory. Features -Material: Aluminum Alloy -Size: About 1.89X1.89X0.30cm/0.74X0.74X0.12inch -It is made of materials, has a strong structure, durable and will not be easily damaged. -With good fastening function, it can well protect your bike accessories. -The excellent production process makes it have a smooth and comfortable without burrs, can use it with peace of mind. -The product has a wide range of applications, and is an choice for mountain bikes, road bikes, etc. -The light weight of the material is reducing the need for riding. Package list: 2 x Washer Fastener