3 8 x 18 High Speed Long Boy Flat Washers Silicon Bronze Lag screws longer than 12 Lag screws longer than 12 inches will have a minimum thread length of 50% of the screw length up to a maximum of 8 inches #7 Heavy Duty Drill Bit Stubby Length 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 8 x 18 High Speed Long Boy