GOOD TOOLS FOR GOOD WORKS, IMSCREWS FIX YOUR HOME. 25PCS Hex Bolts Nuts and Screws with Flat Washer and Lock Washer Made of 304 Stainless Steel Anti-Rust and Corrosion Resistance | By IMSCREWS Package Quantity: 25pcs, Size: M6x20mm, Pitch (P): 1mm, Bolt Diameter (d): 6mm, Bolt Length (L): 20mm, Standard: DIN933/GB5783, Material: Stainless Steel 304 (8/18 Stainless Steel). TIPS: ?? EASY TO CARRY: All the nuts and bolts are packed in a transparent box with clear size label on it. It is convenient for user to store and use. ?? GOOD AFTER-SALE SERVICE: IMSCREWS provides good after-sale service for our product quality problem. Please feel free to contact us if you have any questions.