* Heat treated steel ratchet head. * Fully hardened and tempered. * Chrome plated for corrosion resistance. * Calibration tolerance in accordance with BS EN ISO 6789:2003. * Range: 20-150lb.ft, 27-204Nm. * Every wrench is tested and supplied with an individually numbered test certificate. * Micrometer type torque range adjustment with scale graduated in both lb.ft and Nm. * Flip reverse ratchet mechanism. * Supplied in storage case.