Versatile depth control for precise drilling results. The set includes 8 precision drill depth stop rings in eight sizes and a hex wrench for quick, accurate depth adjustment and secure stopping. Package contents: 8 drill depth stop rings and 1 hex wrench. Premium, durable construction. Forged from high standard carbon steel to withstand constant use without breaking, making it a reliable choice for demanding drilling tasks. Precise depth control and repeatability. The self-centering drill guide stop ring works with a set screw tightened by the included hex wrench to achieve perfect depth control. This enables repeated drilling at the same height with consistent results. Enhanced drilling efficiency. Accurate depth measurement helps prevent material surface burning, minimizes errors and waste, and supports efficient, consistent drilling across projects. Use scenarios - Repetitive hole drilling on multiple pieces in cabinet making or furniture assembly, ensuring identical depth on each piece. - Drilling pilot holes in wood or metal where controlled depth prevents tear-out and delivers a clean finish. - Aligning multiple parts with consistent depths for dowel joints, screws, or other fasteners in assembled projects.