Wera Zyklop Metal-Push Slim ratchets have extremely slim handles and heads, with long leverage. These forged, full metal ratchets are made from chrome molybdenum and are very robust without any torque limitation. The ratchet has a push-through square drive to change the direction of the ratchet. A secure socket lock mechanism prevents unintentional switchover. The ratchet mechanism has fine teeth, giving small increments of just 5°. The 8003A Metal-Push Slim Ratchet has the following specifications: Drive: 1/4in square.Length: 141mm.Head dimensions: 21 x 22mm.