This is a timber untarnished steel button head socket cap assortment that includes the most common sizes. This kit : 10pcs 8-32x3 / 8, 10pcs 8-32x1 / 2, 10pcs 8-32x3 / 4, 10pcs 8-32x1, 10pcs 10-32x1 / 2, 10pcs 10-32x3 / 4 10pcs 10-32x1, 10pcs 10-32x1-1 / 2, 10pcs 1/4-20 x1/2, 10pcs 1/4-20 x3/4, 10pcs 1/4-20 x1, 10pcs 1/4-20 x1-1 / 2, 1pc Tuff Storage Container .