9 x 2 1 2 Star Flat Decking Screws w NIBS Yellow Zinc Plated T17 Carton (2500) 2 4 1 2 Socket Cap Screws Alloy Straight shank to 1 2” 1 2” 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 0 x 180 Hex Cap Screw 8 Star drive prevents cam out and stripping for improved drivability decks and patios