Drill Warehouse 5 Pc Titanium Chamfering Countersink Drill Bit Set - 1/4" to 3/4" - 6mm 10mm 13mm 16mm 19mm for Wood Metal Quick Change Drill Bit Set ADDED DURABILITY: Set includes 5 quick change drill bits coated with Titanium for added strength and longevity CUTS AND DEBURRS: Cuts through steel, sheet metal and other surfaces with only a small amount of pressure and deburrs as you drill A BIT FOR EVERY JOB: Contains sizes 1/4-Inch, 3/8-Inch, 1/2-Inch, 5/8-Inch, and 3/4-Inch. FITS ALL DRILLS: Locks easily into in hex sleeves and quick release chucks and fits all power drills GREAT VALUE: Suitable for low hardness of the workpiec, for home repairs and light jobs such as drilling into wallboard or hanging pictures and mirrors.