DEWALT 8-Piece Assorted Woodboring Self-feed Drill Bit SetAggressive spur provides fast material penetration Optimized cutting geometry provides longer bit life Open tooth design allows for more resharpenings 7 16 In ball groove shank for quick change applications Applications include drilling rough holes in wood for running pipe Features Series Name N A Sub Brand N A Bit Type Self feed bit Bit Length Assorted Shank Size 7 16 in Shank Type Hex Material High speed steel Case Type Hard Quick Change Yes For Use