9/16 x 18 High Speed Long Boy (1/2" Shank) Phillips Bugle Decking Screws Dacrotized 3/16 x 3 Mushroom Spike

9 16 x 18 High Speed Long Boy (1 2" Shank) Phillips Bugle Decking Screws Dacrotized 3 16 x 3 Mushroom Spike 3 16 x 3 Mushroom Spike Zinc Plated (100) 8 x 1 5 8 Simpson Self Drilling Fiber Cement Screws 410 SS Carton (1000) 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 9 16 x 18 High Speed Long Boy (1 2" Shank)