The 4.2 x 25 Box 200 Cement Board Screws PH Twin Cut Silver are purpose-built for fast, secure installation of cement boards onto timber and steel substrates. Featuring a twin-cut point, these screws deliver swift engagement and minimize surface splitting, making them ideal for delicate or rigid materials. Their compact 25mm length is perfect for shallow fixings that still require robust hold. The PH drive offers dependable grip during application, while the silver finish provides basic corrosion resistance suitable for indoor or sheltered exterior settings. Packed in boxes of 200, they combine reliability and convenience for professional installers handling smaller or precision tasks.