Construction: Standard plain annealed copper conductor, V90-HT PVC insulated. staggered twisted triples, 0.025 mm aluminum polyester screen overall, 7/0.25 mm tinned copper drain wire, rip cord, pvc bedding steel wire armour, V90-HT PVC sheathed. Construction: Stranded plain annealed copper conductor, V90-HT PVC insulated, twisted pairs, 0.05 mm aluminum polyester individually and overall screened, 7/0.25 mm tinned copper drain wire, rip cord, PVC bedded, steel wire armoured, V90-HT PVC sheathed. Construction: Stranded plain annealed copper conductor, V90-HT PVC insulated, twisted pairs, 0.05 mm aluminum polyester individually and overall screened, 7/0.25 mm tinned copper drain wire, rip cord, PVC bedded, steel wire armoured, V90-HT PVC sheathed.