Impact and UV resistant A4 Stainless Steel polymer headed pins, used for fixing soffits, fascias, roofline trims and where other aesthetic fixings are required. UV Stable, Impact resistant. Shank Dia. mm: 2.1, Length mm: 40, Material: Austenitic Stainless Steel (A4-316), Colour: White, Head Dia. mm: 6.4.