Maximum diameter: 185mm - Minimum diameter: 130mm - Adjustable range: 141mm - 195mm This tool is ideal for removing 5 and 7 hole fuel tank covers. Curved foot type with radian design, more suitable for the installation surface of the oil pump cover, to ensure that the operation is not easy to slip. Suitable for Mercedes Benz, Ford, Nissan, BMW, Land Rover, Volvo, etc General 12.5mm square hole, can be used with ratchet and conversion sleeve Thick straight chute design, more torsion and more strength 40CR steel is preferable, which is strong and has good machinability. (After quenching and tempering, it has good comprehensive mechanical properties, good low temperature impact resistance and low notch sensitivity. The steel has good hardening. It can be hardened to 28~60mm in quenching in water and 15 in oil soaking.~40mm) Features: 1. Size range: 141mm-195mm. 2.1/2" drive or 21 wrench. 3. This tool is ideal for removing 5 and 7 hole fuel tank covers. 4. Ideal for replacing fuel pumps