Rocaris Drill Stop Bit Collar Set – Kit Includes: 1/8", 3/16”, 1/4”, 5/16”, 3/8”, 7/16”, 1/2” and 5/8” Inch with Allen Wrench to Tighten The Stops Set-Screws (8-Piece)

General Tools & Instruments Bit limit ring Specifications: Name:Drill Chuck & Hex Wrench Material:Carbon Steel Surface:Black finish Specification:3,4,5,6,8,10,12, 16mm How To: 1) Slide correct size drill stop to desired depth on the drill bit. 2) Align locking screw with land (body). 3) Tighten locking screw with included wrench. 4) Remove wrench before use. Great for machinery shaft instruments or on woodworking tools as a bit limit ring. No More Wrapping Tape Around Your Drill Bits! What You Get: 8 X Drill Chuck 1 X Hex Wrench