General description Sealey Premier Calibrated Micrometer Torque Wrench features a flip reverse Chrome Vanadium steel ratchet head with a smooth action mechanism. It is designed for professional use, with a scale graduated in Nm and lb.ft, and is individually tested to standards with a calibration tolerance of ±4%. Each wrench comes with an individually numbered test certificate, ensuring reliability and accuracy. Technical specifications Range: 40-220Nm (29.5-162.4 lb.ft) Model No.: STW904 Calibration tolerance: ±4% Other information Aluminium knurled handle for comfort and control Supplied in an EVA tray Lifetime guarantee*