[High Quality]The drill bit stop collar made of high quality carbon steel, durable and reusable, will be firmly fixed in the placement place, and is not easy to slide, does not damage the drill.[Assorted Sizes]3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm. Comes with 1 drill limit ring (8 pieces in total) with 1 pieces Allen wrench.[Easy to Use]Drill depth stop with tightened adjustment screw, the collar will stay firmly in place exactly where you put them so that the hole depth can be consistent, more convenient use of the round tenon![Drilling Depth Control]Use the 8 pieces set of screw stop collar adjustable drill hole depth split ring to precisely control the depth of a hole you are drilling; Designed to hold your drill bit securely in place and grip the entire diameter of your drill bit without the screw ever touching the shaft.[Wide Applications]The drill bit depth stop kit is used as a mechanical collar, which is very suitable for production and repeated drilling work, suitable for drilling wood or walls.Drill Stop Rings 3/4/5/6/8/10/12/16mmHow to Use1.Slide the correct size drill stop to the desired depth in the drill bit.2.Align the locking screw with the ground (body).3.Tighten the locking screw with the provided wrench.Drill Stop Rings 3/4/5/6/8/10/12/16mmSize: 3mm 4mm 5mm 6mm 8mm 10mm 12mm 16mmMaterial: High carbon steel, aluminum alloy, stainless steel 304 Stainless Steel 8 Pieces Drill Depth Stop, Drill Bit Depth Stop Kit, Depth Stop with Hex Wrench, mainly used to fix the drill bit, limit the depth of the drill hole, so that the depth of the hole can be consistent, more convenient use of the round tenon.Package Includes:8 x Drill Stop Rings (3mm 4mm 5mm 6mm 8mm 10mm 12mm 16mm)1 x 2.5mm Hex WrenchIf the drill bit size differs slightly from the product size, please don't worry, it can be used normally.Drill Stop Rings 3/4/5/6/8/10/12/16mmDrill stops have a built-in screw to help adjust the size and amount of pressure used to tighten the drill stop without damaging it.The Allen wrench will help adjust and install, uninstall the stop bits and can also be used for any other project. The drill stop kit fits most drill bits and easily adjusts to the exact depth required.