C Hook Spanner Wrench Adjustable Coilover Wrench Spanners Hook Wrench 5-48HRC.

Material: Drop Forged Carbon Steel. Made of carbon steel material for wear resistance and durability. Fit For Round Nut: C Type 38-42mm / 45-52mm/55-62mm/68-72. Product hardness: 45-48HRC.

eBay