Drill Stop Collars, 16pcs Adjustable Depth Stop Collars for Drill Bits, Carbon Steel, Compatible with Drilling Machine

Woodworking drill bit depth stop collars ring is made of high-quality carbon steel, durable and reusable. 8 Different Limiter Rings: 3, 4, 5, 6, 8, 10, 12, 16mm in diameter, suitable for helical drills, corner or any type of drilling, meet your various needs. Drill Depth Stop Collar Set: Mainly used for fixed limit drilling depth on the drill bit, help you drill the depth accurately. Setscrew-type collar will not damage bits. Easy to Use: Just slide the corresponding stop collar over the bit, adjust the required depth with a ruler or depth gauge, and tighten the collar screw with an Allen wrench. Wide applications: Works with both standard and brad-point bits such as twist bits and woodworking bits, suitable for drilling wood or wall, perfect for precise drilling, repeated drilling work.