1/4"; TORQUE RANGE 2-25NM; CW AND CCW DIRECTION; 72T; TOLERANCE: +/-3% (CW -/+ 3% CCW -/+ 5%); DOUBLE WINDOW - SPLIT-SCREEN DISPLAY; THE MAIN SCALE HAS A REFERENCE OF METRIC AND IMPERIAL; MATERIAL: HEAD PART- SCM440 ALLOY STEEL, HAND- 40CR ALLOY STEEL; PUSH-PULL LOCKING DEVICE; IN ACCORDANCE WITH DIN ISO6789, ASME B107.14, GB/T 15729