Specifically designed for joining of PVCu bay window sections, but frequently used for other window and door fabrication purposes. Features Self-tapping V-Flute Baypole screw Wafer flange head with Phillips recess Made from Carbon Steel and can withstand 240 of salt spray testing Specification Sizes - 4.8 x 100mm Bit size - PH2 Colour - Zinc Box quantity - 200