Feature: 1. 45# steel is integrally formed, sturdy, wear-resistant and has high hardness. 2. With a box for convenient carrying and storage. 3. 1/2in SquareMouth, can be used with wrench extension rods of the same specifications for connection. 4. Accurate alignment, firm positioning, not easy to loosen, easy to operate and use. 5. The socket body is marked with specifications for easy selection during use. Specification: Suitable for dismantling and repairing motorcycle clutches, and replace the startup disk and disassemble lock nut. Features: 45# steel is integrally formed, sturdy, wear-resistant and has high hardness. With a box for convenient carrying and storage. 1/2in SquareMouth, can be used with wrench extension rods of the same specifications for connection. Accurate alignment, firm positioning, not easy to loosen, easy to operate and use. The socket body is marked with specifications for easy selection during use. Specifications: Main color: black Material: steel SquareMouth size: 1/2in Socket length: 78mm Type: #18, #20, #22 Inner diameter: #18: 18mm #20: 20mm #22: 22mm Outer diameter: #18: 22mm #20: 26mm #22: 28mm Package size: 145 * 125 * 50mm / 5.7 * 4.9 * 2.0in Package weight: 680g / 1.5lb Packing List: 3 * Socket 1 * Storage Box Package List: 3 * Socket 1 * Storage Box