Set Includes: 3/8", 1/2", 5/8", 3/4", 7/8" And 1"Overall Length: 6"Shank: 1/4" HexFeatures A Full-Cone Threaded Tip For Fast And Effortless DrillingContoured Paddle For Fast Chip RemovalHex Shank Power Groove To Reduce SlippageSpur And Reamer Tips For Cleaner Holes