A general-purpose assortment of self-drilling Hex screws. Made by MaxCraft this set includes (30) #8 x1/2-inch, (30) #8 x5/8-inch, (30) #8 x3/4-inch and (30) #8 x1-inch. Also includes (20) #10 x 1/2-inch, (20) #10 x 5/8-inch, (20) #10 x 3/4-inch and (20) #10 x 1-inch.