Chrome Vanadium steel reversible 60-tooth ratchet head. Impact resistant polycarbonate tubing combined with injection moulded nylon thermoplastic for total insulation. Torques in both directions. Calibration tolerance in accordance with BS EN ISO 6789:2017. Accuracy of ±1% at 21°C. Micrometer type torque range adjustment with scale graduated in both lb.ft and Nm. Cold and heat resistant –40°C to +70°C. Fully insulated to BS EN IEC 60900:2018 to protect from electric shocks up to 1500V DC and 1000V AC. Ideal for technicians working on modern hybrid and electrical vehicles (1500V DC safe live working). Also suitable for electricians and other trades (1000V AC safe live working). Includes test and calibration certificate.