Features: This crank ring protector is lightweight with simple and design. Provided with screws and gaskets, easy to install. Give your crank ring a good , and prevent your clothes get dirty at the same time. Suitable for Shimanos M430, M590, M390. Great acessory for your chain wheel.Specifications: Condition: Brand New and High Quality Material: Plastic Color: Black Diagonal Pitch: Approx. 15.5cm/6.1inch Adjacent Pitch: Approx. 11cm/4.3inch Suitable for Shimanos M430, M590, M390 Suitable for 44T Chain Wheel Weight: Approx. 37g Packing List: 1 x Crank Ring Protector 4 x Screws 4 x Nuts 4 x Gaskets Note: Please make sure if the dimensions of your crank set is applicable to this cover and make sure if your crank ring has 4 screw holes.