From 850 Coupling Cable Pay & Collect Submit your order now and collect your items at your local Biltema store in 2 hours! This is how Pay & Collect work FK (H07V-R) (450/750 V). Copper wire with few braids. Plastic insulated. Can be used as copper cabling in buildings, routed through hoses, or in wall pipes. What kind of electrical work can you do yourself?