Drill/Tap/Countersink, Cutting Direction Right Hand, High Speed Steel, Uncoated Finish, Size 5/16 In.-18, Overall Length 3-1/4 In., Shank Type 1/4 In. Quick Change Hex, Includes Plastic Case and Quick Change Adapter
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. 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.