With a carbide split-point tip and aggressive flute angles, DEWALT Multiple-Material Drill Bits deliver the power to easily drill through a range of materials without the need to change bits. A no-spin shank helps to increase efficiency by eliminating bit slippage. Included: 1/8 in., 3/16 in., 1/4 in., 5/16 in. and 3/8 in.