Features: Achieve precise drilling depth control with our Adjustable Drill Bit Stopper Set, designed to prevent over drilling and protect workpiece surfaces. Crafted from metal, this stopper is wear resistant and suitable for various drill bit sizes for quick and easy adjustments. Suitable for woodworkers, professional, and enthusiasts seeking enhances efficiency and accuracy in their projects. Perfect for use in furniture making, home improvement projects, and crafting where precise drilling is essential. Enhances your toolkit with this accessory, ensuring consistent result and professional quality finishes every time. Specifications: Component:Plastic Size:23x19mm/0.9x0.74inch 23x30mm/0.9x1.18inch 35c28mm/1.38x1.1inch Package Includes: 3Pcs Stop Collars note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.