8-Pieces Set: Woodworking Drill Bit Depth Stop Collars Ring Positioner

Drill Limited ring, clamping device, positioner. Works with both standard and brad-point bits. Features: Brand new and high quality. 8-PC Drill Bit Depth Stop Collar. Drill Bit Depth Stop Collar. Setscrew type collar will not damage bits. Positively locks anywhere along the bit. Hardened and Tampered. High Carbon Steel Drills. Sizes:3mm 4mm 5mm 6mm 8mm 10mm 12mm 16mm.