General description The 9pcs Limit Stud Depth Stop set includes 8 different depth stop rings (3, 4, 5, 6, 8, 10, 12, 16 mm) and a hexagonal wrench, designed to precisely control the depth of holes drilled. Made from high-quality carbon steel, these durable stop rings are suitable for various drilling operations, including twist drills, woodworking drills, and angle drills, making them ideal for both wood and wall drilling. Technical specifications Material: Carbon steel (black) with stainless steel center pin Sizes: 8 different depth stop rings Inner diameters: M3: 3mm, M4: 4mm, M5: 5mm, M6: 6mm, M8: 8mm, M10: 10mm, M12: 12mm, M16: 16mm Thickness: 3mm for all rings Height: 8mm for all rings Usage The depth stop rings are primarily used to set the limit drilling depth on drill bits, allowing for precise control over the depth of the holes being drilled. They are compatible with standard drill bits as well as curved head drill bits, and the fixed screw collar ensures that the bit