5/8 x 18 High Speed Long Boy (1/2" Shank) Square Trim-Head Self Drilling Siding Screws 410 Stainless Steel 7/8-14 x 3 1/2 Socket

5 8 x 18 High Speed Long Boy (1 2" Shank) Square Trim Head Self Drilling Siding Screws 410 Stainless Steel 7 8 14 x 3 1 2 Socket 7 8 14 x 3 1 2 Socket Cap Screw Alloy 1 3 4 5 x 20 Socket Cap Screw Alloy 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 5 8 x 18 High Speed Long Boy (1 2" Shank)