Features: Made from steel for strength, durability and resistance from corrosion Suitable for any ½” drive ratchet, extension bar etc. Supplied in a moulded storage case Specification: Sizes: T30-T40-T45-T50-T55-T60-T70-T80 Maximum Torque: T30 - 37 NM T40 - 65 NM T45 - 103 NM T50 - 158 NM T55 - 256 NM T60 - 445 NM T70 - 700 NM T80 - 1048 NM Length: 78mm Manufactured from Chrome Molybdenum Steel - SCM440 Black Phosphate Finish DIN 3121