Fitment: This starter clutch removal tool is compatible with GY6 125cc, 150cc, 152QMI, and 157QMJ engine-based 4-stroke ATV scooters. It also fits mopeds, ATVs, quads, and 4-stroke scooters. Material: Made of heat-treated premium metal, this starter clutch removal tool features high strength, a sturdy construction, and long-lasting durability. Important Measurement Information: Large end inner diameter is approximately 24mm (0.94 inches); large end outer diameter is approximately 30mm (1.18 inches). Please compare with your existing part to ensure compatibility. Includes 4-Pin Lock Nut Spanner: This tool is a 4-pin socket clutch nut remover with four pegs on each end; one side has a 20mm inner diameter and the other side has a 24mm inner diameter. Ease of Use: Designed with four claws and a square drive connection, this starter clutch removal tool allows for easy alignment and secure attachment to compatible tools. Note: Due to variations in lighting and screen settings, the item's color may differ slightly from images. Slight dimensional differences may occur due to manual measurement. Sold by Minnanxin