Product Description Material 304 High quality stainless steel. It exhibits good workability; and a high t & eacute; nacity; up to a temperature of about 800 degrees. Anti rust Resistance to agrave; corrosion Without pollution Quality; Product Premium Material High Hardness Features Screws: M3 * 8 M3 * 12 M3 * 16 M3 * 20–10 Pi & egrave; these Each M4 * 8 M4 * 12 M4 * 16 M4 * 20–10 Pieces Each M5 * 8 M5 * 12 M5 * 16 M5 * 20–10 Pieces Each M6 * 8 M6 * 12 M6 * 16 M6 * 20 –10 Pieces Each M3 Washer M3 Nut — 45 Pieces Each M4 Washer M4 Nut — –45 Pieces Each M5 Washer M5 Nut — 45 Pieces Each M6 Washer M6 Nut — 45 Pieces Each Accessories M3 key Hexagonal Allen - Diameter: 2.5mm Length: 19 * 55mm M4 wrench; Hexagonal Allen - Diameter: 3.0mm Length: 23 * 57mm M5 wrench; Hexagonal Allen - Diameter: 4.0mm Length: 24 * 65mm M6 wrench; Hexagonal Allen - Diameter: 5.0mm Length: 24 * 77mm Warning: Products contain small parts. Please do not let children play to avoid accidental ingestion.