8-piece drill depth stop set (3-16mm) with adjustable drill stop collars, ring positioner, and hex screwdriver.

△ Carbon Steel Material: These woodworking drill depth stop collars are made of high-quality carbon steel with a blackened surface, making them rust and corrosion resistant, with high hardness, and not easily worn or torn. △ Use: This hole depth stop is used to precisely control the drilling depth when drilling holes in wood to prevent material waste. △ 8 Sizes: The depth stop collar set includes 8 pieces measuring 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, and 16mm, along with small wrenches. Different sizes can meet various needs. △ Screw Attachment: Secure the drill bit to the depth stop collar by tightening the screw. The screw's secure grip prevents the stop ring from slipping, ensuring a precise drilling depth. Easy to use: simply position the stop hole correctly on the drill bit, then tighten the screw to secure the stop ring. The operation is simple and convenient. When drilling, the required depth is often unexpectedly exceeded. How can you use efficient force without over-drilling? This is our solution! The drill stop kit fits most drill bits and can be easily adjusted to the exact required depth. By preventing over/under-drilling, it instantly produces holes of equal length and accuracy. The drill bit has integrated screws that allow you to adjust the size and pressure used to tighten the bit without damaging it. The Allen key will help adjust and install/remove the stop and can also be used for other projects.

Various size options:
3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 16 mm.
Compatible with any torque drill for wood, metal, concrete, or masonry with a hex head screw.
In jobs where precise drilling is required, it is cushioned to prevent errors and material waste.

Instructions for use:
1) Slide the correct size retaining device to the required depth in the drill bit.
2) Align the locking screw with the ground (main body).
3) Tighten the locking screw with the provided wrench.

Note:
1. Ensure the nut screw is firmly fixed in the centre of the flat part of the drill bit and tightened.
2. Do not operate at high speed as it may lose balance.