High Quality Material: The bike chainring chain guard is made of high-quality plastic material. PROTECTIVE: The chain guard cover helps protect your bicycle chain from dust, water, and stones. It also prevents oil from getting on your clothing while riding. EASY TO INSTALL: The chain guard cover is simple to install with no complicated steps required. It is convenient to attach and remove. Lightweight design ensures it does not affect your ride. SIMPLE DESIGN: This crank ring protector is made of durable plastic, featuring a lightweight, simple, and classic design. Note: Before ordering, please count the teeth of your bicycle crankset, count the crankset bolt holes, and measure the diameter of the adjacent holes. Ensure the dimensions of your crankset are compatible with this cover. Specification: Suitable for 32-38T Size: 48cm x 18cm / 18.90 inches x 7.09 inches Package Includes: As described Note: Slight measurement variations may occur due to manual measurement and screen display differences.