Wood Spade Bit SetSpur and reamer edges prevent splintering Wingtips and cupped spade tip offers fast drilling Power groove locks on the hex shank prevent wobbling of the bit The line of Hilti High Speed Wood Spade Bits drills holes in wood at faster speeds with less effort. The specially designed wing tips and the strong steel bit guarantee the user an easy day of drilling. This pack comes with 6 durable spade bits of different sizes: 3 8, 1 2 in., 5 8 in., 3 4 in., 7