Complete Size Set: Includes 16mm, 18mm, 19mm, 21mm, 22mm, and 24mm sizes to cover most passenger and light vehicle shock absorbers nut, meeting maintenance needs High Strength materials: Crafted from hardened alloy steel with black anti rust coating, resistant to impacts and wear, suitable for pneumatic or ratchets wrenches under high torques Special Grooves Design: Features side grooves and hollow structure to perfectly avoid shock absorbers wiring and pipelines, allowing direct nut installation without disassembling pipes, solving traditional socket wrench limitations 12 Point Fluted Inner Hole: 12 tooth design provides larger area than hexagonal sockets, distributing force evenly to nut slippage and protect edges generic Compatibility: Standard 1 / 2 " drive interfaces fits ratchets and power tools, length for easy operations in car repairs and chassis maintenance, Manufacturer: Whoasyst