A must for any well-stocked garage or workshop! You get a standard 115-pc. titanium-coated high speed drill bit set along with 210 additional bits of the same quality — all the replacement bits youll ever need in the most popular sizes. For use in either 3/8 in. or 1/2 in. drills to bore into steel, wood or plastic.* 29 fractional bits, 1/16 in. through 1/2 in.*Number bits, #1 through #60* Letter bits, A through Z