Forgefix TFHUWSD5550L Roofing Screw 5.5 x 50mmForgefix TechFast Roofing Sheet to Steel Screws are designed for secure fastening of roofing sheets to steel structures. These screws feature a self-drilling tip, making installation efficient on light gauge steel up to 5mm thick.Features No.3 drill tip for self-drilling Suitable for light gauge steel up to 5mm 8mm Hex head typeSpecifications Brand: Forgefix MPN: TFHUWSD5550L EAN: 5028485195016 Size: 5.5 x 50mm Effective Thread Length: 36mm Pack Size: 100