1LCG7 When you need to tighten or loosen fasteners, the Ratcheting Obstruction Wrench is the tool you will want to have on hand. This ratcheting box end wrench features a S-shaped design that offers double box ends and spline. It has an offset of 0 degrees and an overall length of 3 1/2 in. The alloy steel construction makes it sturdy and durable. The Ratcheting Obstruction Wrench is your ideal solution for working with fasteners in confined spaces.