?Head Style: Button Head Socket Cap; Driver Type: Hex Socket (5mm); Thread Diameter: 6mm; Pitch: 1.0mm ?High Quality 12.9 Grade Alloy Steel: Upgraded black galvanized with superior rust resistance and excellent corrosion resistance, ensuring these M6 screws are used for a long time. ?Product Size: Including 22pcs M6x10mm, 20pcs M6x12mm, 18pcs M6x14mm, 16pcs M6x16mm, 15pcs M6x20mm, 13pcs M6x25mm, 12pcs M6x30mm, 505pcs in total, M6 Button Head Socket Cap Bolts/Screws Nuts Washers Assortment Kit. ?Well-organized Storage Case: The M6 bolt set comes with a thickened plastic case, all screws are sorted and packed in different compartments, neatly and well organized, detailed labels are pasted on both inner and outer lid, easy to storage and access.