This is a quality untainted steel phillips pan machine screw assortment that includes the most touristy sizes. This kit : 25pcs 6-32x1 / 4, 25pcs 6-32 x 1/2, 25pcs 6-32 x 3/4, 25pcs 6-32 x 1, 25pcs 8-32 x 1/4, 25pcs 8-32 x 1/2, 25pcs 8-32 x 3/4, 25pcs 8-32 x 1, 20pcs 10-32 x 1/2, 15pcs 10-32 x 3/4, 15pcs 10-32 x 1, 15pcs 10-32 x 1-1/4, 1pc Tuff Storage Container .