Features: Achieve precise drilling depth control and prevent materials damage with our drill stop collar, enhancing your work efficiency significantly. Crafted from high strength carbon steel, this wear resistant tool is for various drill bit size and ensures easy and quick installation. For woodworkers, DIYer enthusiasts, professional renovators, and anyone needing accurate drilling. Perfectly suited for applications in furniture making, home renovation, and crafting projects. Elevates your toolkit with this essential accessories that guarantees consistent result and superior performances in all your drilling tasks. Specifications: Component:Carbonized Steel Quantity:7pcs/8pcs Package Includes: 7pcs/8pcs Drill Depth Limiter Rings note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.