This torque wrench has a ratchet mechanism with a reversing lever for clockwise and anticlockwise rotation. Very secure socket holding with push button release. A clearly audible click signal when the selected torque is reached. Extremely high accurracy to ISO 6798 standards. The MC200 has a 1/2" (12.7mm) square drive. Total length 530mm. The torque range of 40-200Nm makes this wrench ideal for automotive and industrial assembly processes. Storage case included.