... supporting pinThe product is made of galvanized screw, nylon tube and round fixing sheet.Application: Construction,heating project, ... carbon steel for screw, nylon or PE or PP for tube and diskSurface TreatmentZinc coating for screwDiameter1.7mm--5mmLength20mm--150mmColorWhite ... , blue, grey, red for nylon tube and disc High quality plastic heat insulation nail(split ...