Drill Depth Stop Bit Collar Set Adjustable Positioner Limit Ring Allen Wrench Tighten The Stopper Set-Screws Woodworking Tool

Drill Stop Bit Collar Set – Kit Includes: 1/8", 3/16”, 1/4”, 5/16”, 3/8”, 7/16” and 1/2-Inch with Allen Wrench to Tighten The Stops Set-Screws8pcs Drill Bit Depth Stop Collar, drill Limited ring, clamping device, positionerStop Collar: Diameter-3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm（1/8, 3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 5/8") Hexagonal diameter: 2.5 mmPositively locks anywhere along the bit, screw type collar will not damage bits.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 round tenon.Applicable to standard and spikes,The fixed screw shaft does not damage the drill bit