Diameter: 1-1/8"Overall Length: 17-1/2"Flute Length: 13-1/2"Shank Size: 7/16"Bosch Daredevil Auger Bits Are Easy In Wood, Tough On NailsDual Cutting Edges Deliver Easier Nail Cutting And Balanced DrillingOpen-Faced Flute Offers Improved Chip RemovalReinforced Tip Withstands Repeated Nail HitsReamer Edge Provides Improved Entry And Exit Hole Quality