ScrewMade in China Self Drilling Roofing Screw Carbon Steel Zinc Plated, Heat Treatment with EPDM Washers DIN 7504K, Find details about China Self Drilling Screw, Roofing Self Drilling Screw from Made in China Self Drilling Roofing Screw Carbon Steel Zinc Plated, Heat Treatment with EPDM Washers DIN 7504K