Set of 200 RODAC self-drilling metal screws - box contains: 30 pièces #8x1", 30 pièces #8x3/4", 30 pièces #8x5/8", 30 pièces #8x1/2", 20 pièces #10x5/8", 20 pièces #10x1/2", 20 pièces #10x3/4" and 20 pièces #10x1". It is ideal for use with sheet metal and wet environments.