Feature: 1.?Sprocket Size?10 teeth sprocket, with 0.5x0.7in inner diameter and 1.8in diameter. 2.?High Quality Steel?Chain sprocket is made of high quality steel, strong, anti corrosion, wearable and durable. 3.?Easy To Install?Electric scooter motor engine sprocket is easy to install, does not require complicated tools, and is easy to use. 4.?Practical?Practical replacement parts for electric tricycles, which can directly replace old sprockets, quickly disassemble, and are easy to use. 5.?Perfect Fit?Electric scooter sprocket is professionally designed and has stable performance to ensure perfect fit and correct operation. Specification: Condition: 100% Brand New Item Type: 10 Teeth Sprocket Material: Steel Inner Diameter: Approx. 12 x 17mm/0.5 x 0.7in Diameter: Approx. 46mm/1.8in Application: Suitable for electric tricycle Package List: 1 x Sprocket