Hexagonal Socket Cup Head for Tool Friendly Use: Hexagonal cup head distributes force evenly, slippage during installation / removal Compatible for standard hexagonal tools, ideal for door maintenance and projects High Strength Alloy Steel Construction: These SelfTapping screws are made from premium alloy steel, offering hardness and toughness Resistant to bending, breaking, and rust, they withstand humid outdoor environment for long last durability AntiLoose Coating for securely Fastening: precisely locking adhesive on the threads ensures a firmly grip after installation Prevents loosening due to vibrations or temperature changes, enhancing stability for locks and hardware fittings Compatible for Eu Cylinders: Designed specifically for European cylinder removal / installation, works seamlessly with SS001pro extractors 30Piece set meets locksmiths ' bulk repair needs SelfTapping Threads for Effortless Drilling: Features finely spaced, sharply pointed threads that easily penetrate wood, panels, and metal without pre drilling Saves time and effort during repairs and home installations, Manufacturer: carotoe