■ Suitable for disassembly and assembly of screws or cylindrical workpieces
■ Made of chromium vanadium steel, the surface is polished and chromium plated
■ Can be used with 1/2" ratchet wrench, adjustable wrench or 21mm wrench (5mm with 3/8" ratchet wrench or 19mm wrench)
■Specifications: 5, 6, 7, 8, 10, 12, 14mm
■Note: 14mm is only used with adjustable wrenches or 21mm wrenches