Stranded/Solid Copper Conductor, PE / PVC! / XLPE / Silicon / FR-XLPE Insulated each Pair / Triad laid up shielded individually with Mylar / Drain Wire / Al Mylar, all Pairs /Triads then laid up together overall shielded with Mylar / Drain Wire / Al Mylar, PE / PVC / FRLS / PVC ST 2 / LSOH Inner sheathed Unarmoured / Cl Steel round Wire / Strip / GI Steel Wire braided (Armoured), PVC / FR! FRLS / PVC/ST2 / LSOH Outer Sheathed from 2 Pair/Triad to 61 Pair/Triad in sizes 0.5 sq.mm to 2.5 sq.mm