From the brand Description of product High quality, made of A2-70 stainless steel 20pcs M3x0.5 (3mm), 20pcs M3x0.5 (4mm) , 20pcs M3x0.5 (6mm), 20pcs M4x0.7 (4mm) 20pcs M4x0.7 (6mm) 20pcs M5x0.8 (5mm), 20pcs M5x0.8(8mm) 20pcs M6x1(6mm), 20pcs M6x1(10mm), M8x1.25(8mm) With plastic box, convenient to store small screws. New and old boxes are shipped randomly. 200Pcs Stainless Steel Hex Socket Head Cap Screws, Tapered Grub Screws, Hexagon Socket Head Cap Screws, Internal Hex Drive Screws , Allen Head Screw Stainless Steel, Hex Socket Screw Kits Features: Does not rust not permanently Abrasion resistance, corrosion protection No pollution and environmental protection High hardness, no deformation Specification: Quantity: 200pcs Material: A2-70 stainless steel Color and size: as shown in the picture Screw Type: Hexagon Screws Package Includes: Thread * Quantity M3 * 3 * 20 pcs M3 * 4 * 20 pcs M3 * 6 * 20 pcs M4 * 4 * 20 pcs M4 * 6 * 20 pcs M5 * 5 * 20 pcs M5 * 8 * 20 pcs M6*6*20pcs M6*10*