GOOD TOOLS FOR GOOD WORKS, IMSCREWS FIX YOUR HOME. 120PCS HEX BOLTS NUTS with Flat washer and lock washer Made of 304 stainless steel anti-rust and corrosion resistance | by IMSCREWS PACKAGE QUANTITY: 20pcs¡ªM4x16mm, 20pcs¡ªM4x20mm, 20pcs¡ªM4x25mm, 20pcs¡ªM5x20mm, 20pcs¡ªM5x25mm, 20pcs¡ªM6x25mm. 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.