ThunderBit+ Sets Set 29 Piece HSS Black and Bronze Oxide 1/16"-1/2" by 64ths

Features

• Thunderbit® drills have a special heavy-duty core that guarantess increased strength and reduced breakage. Unique spiral flute design improves chip ejection and coolant flow to the point. 3-flat shank reduces slippage in the drill chuck, 135 split point.