Drill chuck 9 pcs. Limiting depth stop for pins, Positioning ring Drill depth stop, Depth stop bit, Positioner, Locator, Drill, HexSizes: 8 different depth stops, the box contains 8 different depth stop rings 3, 4, 5, 6, 8, 10, 12, 16 mm, usable for different types of drills, and a hex wrench. Durable: The carbon steel stop ring is made of highquality carbon steel, which is durable and has a long service life. It will control the depth of the hole you drill with precision. Wide range of applications: Drill depth stop ring is suitable for repeated drilling operations, suitable for twist drills, wood drills, angle drills, etc. It can be used for drilling in wood or drilling in walls. Highquality material: Carbon steel stop ring; the middle of the pin is stainless steel. Durable and corrosionresistant, it is a good tool for woodworking and woodcraft. Method: It is mainly used to set the limiting drilling depth of the drill and accurately control the drilling depth. the depth of the hole to be drilled. It is not only suitable for standard drills, but also for curved head drills. The fixed screw collar will not damage the drill. Material: carbon steel Color: black Total length: M3: Inner diameter: 3mm 0.1 inch, thickness 3mm 0.1 inch, height 8mm 0.3 inch M4: Inner diameter: 4mm 0.1 inch, thickness 3mm 0.1 inch, height 8mm 0.3 inch M5: Inner diameter: 5mm 0.2 inch, thickness 3mm 0.1 inch, height 8mm 0.3 inch M6: Inner diameter: 6mm 0.2 inch, thickness 3mm 0.1 inch, height 8mm 0.3 inch M8: Inner diameter: 8mm 0.3 inch, thickness 3mm 0.1 inch, height 8mm 0.3 inch M10: Inner diameter: 10mm 0.4 inch, thickness 3 mm 0.1 inch, height 8 mm 0.3 inch M12: inner diameter: 12 mm 0.5 inch, thickness 3 mm 0.1 inch, height 8 mm 0.3 inch M16: inner diameter: 16 mm 0.6 inch, thickness 3 mm 0.1 inch, height 8 mm 0.3 inch Package includes: 1*M3 1*M4 1*M5 1*M6 1*M8 1*M10 1*M12 1*M16 1*hexagon wrench