Heat treated steel ratchet head Fully hardened and tempered. Electrodeposition finish for corrosion resistance. Sealey Torque Wrench 3/8 Drive The Sealey AK623B micrometer torque wrench is one of a comprehensive range of premier hand tools, suitable for daily professional use. The tool is exremely hard wearing, the tool is fully hardened and tempered with a heat treated steel ratchet head and an electrodeposition finish for corrosion resistance. With a range of 7-112NM(5-83lb.ft), the wrench features calibration tolerance in accordance with BS EN ISO 6789-1:2017. Every wrench is tested and supplied with an indivdually numbered test certificate. Flip reverse ratchet mechanism for ease of use Supplied in a plastic storage case for easy transportation and protection. Features and Benefits: Heat treated steel ratchet head Fully hardened and tempered. Electrodeposition finish for corrosion resistance. Calibration tolerance in accordance with BS EN ISO 6789-1:2017. Range: