Features:Intimate Design: Features aluminum alloy, Chain Catcher Bike enhances the hardne, reduces the weight, is easy to carry, and will not bring too-much burden to the bicycles.Protect Chain: Used for road bikes, effectively prevent chain drop and moving, can guide the chain, protect the chain. Chain Guide keeps the chain from falling in-case-of an over-shift.Strong Compatibility: This Bicycles Chain Guide contains four types of stainle steel screws of different lengths, with strong compatibility, and fits for 34T-50T, 36T-52T, and etc.Convenient To Operate: Easy to operate, and the installation of this Bike Chain Guide can be done without complicated tools, very convenient and practical in daily-life.Fits For: Aembled at the front shifting position, easy to aemble. This Cycling Chain Guide fits road bikes and effectively prevents the chain from falling off that frame.Specifications:Material: Aluminum AlloyColor: Black/Red/Golden/SilverPackage Weight: approx.35gSize: As The Picture ShowsPackage Includes:1Pc x Bicycles Chain Drop ProtectorNote:Please allow 1-2cm error due to manual measurement. Please e sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!