✔ Includes 450 Pcs, 12 Sizes, M3 Hex Socket Head Cap Screws, Thread Pitch 0.5 mm, Thread Size (Diameter) 3 mm, Thread Length From 4 mm to 30 mm: M3 x 4, M3 x 5, M3 x 6, M3 x 8, M3 x10, M3 x 12, M3 x 14, M3 x 16, M3 x 20, M3 x 25, M3 x 30; ✔ Material of Screws: Stainless Steel 304: High Strength and Anti-corrosion in Various Conditions;
✔ Includes 450 Pcs Thread Pitch 0.5 mm M3 Hex Nuts to Meet Different Applications; ✔ Material of Nuts: Stainless Steel 304: High Strength and Anti-corrosion in Various Conditions;
✔ Includes 450 Pcs Φ3 Washers: Add More Touch Area to Meet Different Applications, Protect Parts from Being Damaged ; ✔ Material of Washers: Stainless Steel 304: High Strength and Anti-corrosion in Various Conditions;
✔ Includes 1 Pcs Hex Key, Hex Size: 2.5 mm, to Drive These Screws Conveniently and Easily ; Material of Hex Key: Chrome-Vanadium Steel and Nickel Plated: Higher Strength and Anti-rust;
✔ All These Screws, Nuts, Washers and Hex Key Packed In a Sturdy Easy-use Plastic Storage Case, Organized Conveniently and Easily