• Double-threaded screw made of galvanized steel, strong and durable • High-quality stainless steel flange nuts with excellent resistance to oxidation • Precise, clean, and burr-free thread allows for easy screwing • Nuts with locking teeth provide a firm and secure grip • Includes 10 M8 suspension bolts, 20 M8 flange nuts, and 1 Torx screwdriver bit • Suitable for direct fastening in wood or with plugs in other base materials • Recommended for use in construction, carpentry, structures, plumbing, and rooftop solar systems • Allows fastening in concrete, brick walls, wooden structures, walls, and ceilings • Provides excellent holding and fastening power in various materials • Material: galvanized steel and stainless steel • Size: M8*100mm • Contains small parts, keep out of reach of children • Do not strike the flat end with a hammer to avoid damaging the thread