Box Spanner Socket Wrench Set is Designed for tight and hard-to-reach spaces. This Wrench can take on automotive repair and furniture assembly. It also works well to secure the back nut or bolt while tightening or loosening the front nut or bolt with a socket or combination wrench. They are designed to be versatile enough to tighten and loosen fasteners of various sizes without needing to grab other tools. Made from durable steel with a corrosion-resistant chrome finish, our wrenches will become a permanent staple in your toolbox. Precision-machined for a tight fit, the sliding jaw contact in different spots for smooth operation and less play.