Light reflection: with light-reflective pads on both sides of the pedals, make it visible from distance and enhances safety riding at night. Perfect anti-slip design: surface non-slip tooth design but also grasp the foot, offer you great grip and support to maximizes your efficiency. Material: Made of high-quality aluminum alloy Threads size: standard size 9/16 inch Clear sign and easy to install: inchLinch and inchRinch signs, inchLinch is left and inchRinch is right, easy to identify and put on with wrench when installing.