54PN52 With its alloy steel construction, the Ratcheting Wrench is an essential tool for any mechanic. Featuring a ratcheting open and box end, this wrench provides easy access to nuts and bolts. The 6 3/4" long wrench has a 12 mm head size and is made of alloy steel. It also has a one piece handle that allows you to work with it comfortably in tight spaces. The Ratcheting Wrench is the high quality tool you need when working on your car or motorcycle.