520pcs home head cap multifunctional hardware hex socket screws set

1. 520pcs/set includes 10pcs m6x8, 10pcs m6x12, 10pcs m6x16, 10pcs m6x20, 10pcs m5x8, 10pcs m5x12, 10pcs m5x16, 10pcs m5x20, 10pcs m4x8, 10pcs m4x12, 10pcs m4x16, 10pcs m4x20, 10pcs m3x8, 10pcs m3x12, 10pcs m3x16, 10pcs m3x20, 45pcs washers, 45pcs nuts, 45pcs washers, 45pcs nuts, 45pcs washers, 45pcs nuts, 45pcs washers, 45pcs nuts. 2. 304 stainless steel