The Rawlplug WHO Countersunk Frame Fixing Screws are a professional and reliable solution for securing window and door frames. Manufactured from top-quality materials, these 7.5 x 112mm screws offer a robust and durable connection in a variety of substrates, including concrete, brick, stone, and blockwork. With their countersunk heads, they provide a neat finish once installed. These screws are designed for high load applications and ensure excellent holding power.