3 4 x 18 High Speed Long Boy (1 2" Shank) Square Bugle Head Decking Screws Dacrotized 13 32 Heavy Duty Jobber Drill 13 32 Heavy Duty Jobber Drill Bit You can utilize these pieces of hardware in solid or hollow surfaces Straight shank to 1 2” 1 2” reduced shank for sizes above 1 2” M2 high speed steel Sharp cutting edge to drill in many different materials: Mild Steel Cast Iron Aluminum Wood Extra length flute with continuous cutting edges for drilling deep holes and fast chip removal Reduced shank fits all drill motors with 1 2” chucks Non slip grip prevents the bit from spinning in the chuck 3 4 x 18 High Speed Long Boy (1 2" Shank)