Number of sticks- 500 Pcs DURABLE CONSTRUCTION: Made from corrosion resistant stainless steel, these self-drilling screws are built to last for exterior & interior applications. SELF-DRILLING DESIGN: Unique drill point allows for easy installation without pre-drilling, drilling through boards up to 1/2" thick into light gauge metal frames. WIDE APPLICATION: Suitable for screwing fiber cement boards, ACP boards, calcium boards and other rigid boards to metal frames or studs for walls, ceilings and more. CONVENIENT PACKAGING: Supplied in a re-sealable bag containing 100 precision-made screws, providing excellent value for professionals and DIY projects. Crafted to high standards, these screws are manufactured with consistent quality control.