Daredevil, 1/2" x 16", Spade Bit, Features A Full Cone Threaded Tip For Fast & Effortless Drilling, Contoured Paddle For Fast Chip Removal, Hex Shank Power Groove To Reduce Slippage, Spur & Reamer Tips For Cleaner Holes, 1/2" Diameter, 15"Drilling Depth, 1/4" Hex Shank.