Road Bicycle Crankset Wide Narrow Chain Guide Protector Drop Catcher Carbon Fiber Chains Anti-Drop Stabilizer Bike Accessories Black Feature: Main body 3K carbon fiber The fixing screw can be used for the front locking screw The overall weight is about 6g Specification: Name: Bicycle crankset chain stabilizer Colour: Black Material: carbon fiber Weight: about 6g Packing size: about 100*30*10mm Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.