Product Description Read More Screw Size: M28 M212 M216 M220 M38 M312 M316 M320 M48 M412 M416 M420 M58 M512 M516 M5 * 20 M2 Washer M2 M3 Nut M3 Washer M4 Nut M4 Washer M5 Nut Washer M5 Nut Professional range and sizes to meet all your needs, creating an easier and more convenient working environment. Read more High quality carbon steel. It has good workability and high toughness up to a temperature of about 800 degrees. Anti-rust Corrosion resistance Pollutant-free Product quality Premium material High hardness More M2 Hexagonal Allen Wrench - Diameter: 1.5mm Length: 1645mm M3 Hexagonal Allen Wrench - Diameter: 2.5mm Length: 1955mm M4 Hexagonal Allen Wrench - Diameter: 3.0mm Length: 2357mm M5 Hex Wrench - Diameter: 3.5mm Length: 26*60mm Warning: The products contain small parts. Please do not let children play to avoid accidental swallowing. Continue reading