3 Piece, Nail Strike Bit Set, Consists Of: 1/2" , 3/4" & 1", Nail Killing Wood Boring Bit, Adds Extreme Durability Speed For Nail Embedded Wood, Reinforced Reamer Cutting Edges, Optimized For Wood & Some Wood With Nails Combines Superior Drill Speed With Engineered Nail Cutting Durability, Fully Threaded Cone Tip Pulls The Bit Through Wood Quickly & Effortlessly, Contoured Paddle Design Increases Speed With Faster Chip Removal, Hex Shank Improves Bit Grip & Allows Use With A Variety Of Drill Types, Premium Bit Material Combined With Innovation For Great Performance & Life.