1、RIGID STAINLESS STEEL: Press riveting screws are made of excellent 304 stainless steel with high strength and good corrosion resistance in harsh environments such as high temperature, cold and high humidity 2、RUST PROOF MATERIAL: Pull riveting screw also has excellent rust proof and excellent oxidation resistance to ensure long use 3、WITH BOX: All bolts are packed in a sturdy and durable case to effectively hold the weight of the entire package. In order to avoid screws being scattered or lost during use, each different type of screw is specially packaged for your convenience of storage 4、WIDE RANGE OF APPLICATIONS: Screw kits are suitable for professionals, hobbyists, landlords, repairmen and other DIY 5、PERFECT REPLACEMENT: This screw kit is perfect for replacing broken and missing screws. A perfect friend when you are angry about a missing bolt. There are many different sizes to suit your maximum needs