Fernox Central Heating Protector F1 500ml Option:500ml It's heat resistant so will It's heat resistant so will help protect against everyday scuffs and scratches For wood and metal Progressive tooth strip for high cutting performance and fast chip clearance HSS bi metal with 8% cobalt alloy for extreme resilience and a long lifetime Power change adapter for fast and safe attachment and release Protects against corrosion and scale in mixed metal central heating systems When used in conjunction with Cleaner F3 gas savings of up to 15% can be achieved every time you heat your room Stops frequent venting of radiators Prevents sticking pumps and boiler noise Reduces maintenance costs and saves on fuel bills Prevents cold spots in radiators Non toxic environmentally friendly