JET Torque Wrench 1/2-Inch Drive Click - 250-ft/lb Torque - Super Heavy DutyTORQUE WRENCH - JET's 1/2 Inch Drive Super Heavy Duty Torque Wrench gives 50-250 ft/lb of torque and features a magnified view window showing torque value in numbers only - no scale lines to readINCREASE PRODUCTIVITY - Patented positive lock prevents accidental change of value; Sure grip handle with finger groove ensures correct placement of hand for better accuracyBUILT TO LAST - High quality Japanese springs resists fatigue and are tested to 4 x ISO standards; Patented dual roller reaction bar system minimizes friction for increased accuracyMAXIMUM STRENGTH - Drop forged chrome molybdenum ratchet pawls for maximum strength and hardened steel tube will not deflect under strainFUNCTIONAL - Best-in-class 48 tooth quick release reversible ratchet head; Conversion scale permanently etched into tube for easy conversion to Nm