• Complete hole drilling, tapping and deburring/countersinking in one operation with power drill saves labor and time
• Back tapered beyond tap to prevent thread damage from over-drilling
• Deburr/countersink also provided on bit beyond back taper
• Power tool accessory made from hardened high-speed steel vs. carbon steel for longer life
• High quality hex shank to ensure strong connection to drill chuck
• Designed to tap up to 10-gauge metal
• Quick change adaptor included in both metric and standard kits