Complete drilling, tapping, and deburring/countersinking in a single operation with this electric drill saves time and labor. Back relief extends beyond the tap to prevent thread damage from over-drilling. Deburring and countersinking are also possible beyond the back relief. Made of hardened high-speed steel for increased durability compared to carbon steel. High-quality hex shank ensures a secure connection to the drill chuck. Designed for tapping metal up to 10 gauge. Quick-change adapter included in both metric and standard kits. Specifications Material: High-speed steel Material thickness: Up to 10 gauge Material type: Mild steel, copper, brass, aluminum Bit type: Slotted bit with thinned core Shaft: 6 mm quick-change hex adapter Dimensions: M4 x 0.700 mm