1. Standard: metric
2. Material: steel
3. Opposite side size: 3/8 inch
4. Surface treatment: galvanized
5. Weight: about 20g
6. Specification: 17/19/22/24mm
7. Features: motorcycle spindle tool, use any 3/8 inch, drive tool or standard socket, widely used, four specifications, quenching treatment, easy disassembly and assembly