A bench hook is a woodworking accessory that enables a piece of wood to be held firmly in position on a workbench while it is cut. It has no moving parts and acts simply as a support for the workpiece (the piece of wood currently being worked on).
By keeping the workpiece firmly in place, a bench hook can help prevent errors, improve precision and increase safety. The cutting is usually done with a saw, but can also be done with a plane or a chisel.