ForgeFix TechFast Window Baypole screws are self-drilling screws designed for joining bay windows and metal-reinforced PVCu sections. They feature a wafer head with a TORX compatible recess and a No.3 drill tip, enabling self-drilling into steel up to 4mm. These screws are fire resistant and coated with 'Elementech' for corrosion resistance, having undergone 1000 hours of salt spray testing. They comply with EU safety, health, and environmental requirements. An impact bit (TX25) is included.