Electric Scooter Sprocket Chain Sprocket 3 Holes Crankset Gear Plate 55Teeth Electric Scooter Accessory ? ? If you are not satisfied in any way, simply return it for a full refund. ?FINE MACHINED?Made by standard machining, which ensures chain retention, reduces friction and noise, prolong the service life of the crankset sprocket. ?IT APPLIES TO ?Professional manufacturing, stable performance and high reliability. It is a wonderful accessory for electric scooters. Feature: 2.?FINE MACHINED?Made by standard machining, which ensures chain retention, reduces friction and noise, prolong the service life of the crankset sprocket. 3.?EASY TO USE?Good toughness, durability and long service life.Easy to use, stable performance, simple . 4.?IT APPLIES TO ?Professional manufacturing, stable performance and high reliability. It is a wonderful accessory for electric scooters. Specification: Item Type: Sprocket Material: Metal Color: As Pictures Shown Tooth Pitch: Approx. 55mm / 2.2in Inner Diameter: Approx. 30mm / 1.2in Outer diameter: Approx. 113mm / 4.4in Package List: