Specifications: -Materials: 304 stainless steel -Color: silver -Box size: 13.2 x 7.2 x 2.3cm -Head type: hexagon socket head -Standard: metric -Size of the box: 13.2 x 7.2 x 2.3cm -Size and Quantity; M2 x 20mm x 20pcs M2 x 16mm x 20pcs M2 x 12mm x 20pcs M2 x 8mm x 20pcs Nut M2 x 80pcs M3 x 20mm x 20pcs M3 x 16mm x 20pcs M3 x 12mm x 20pcs M3 x 8mm x 20pcs Nut M3 x 80pcs M4 x 20mm x 20pcs M4 x 16mm x 20pcs M4 x 12mm x 20pcs M4 x 8mm x 20pcs Nut M4 x 80pcs NOTE: 1. The products contain small parts, never let children play to avoid inadvertent ingestion. 2. Please allow an error of 1 & agrave; 3mm due to manual measurement. Thanks for your understanding. Package content: 1 x Kit of 480pcs bolts (screw + nut)