Great Water 15mm OD x ½" BSP Brass Nut x 15" Superflex Large bore hose (Pair) 512115 Plumbing tools If the bottle supplied is

If the bottle supplied is inadequate

Spring wire with corkscrew probe

Drain and flush thoroughly

5 & 3Mm 7-10 X 2Mm 12 & 13 X 3Mm 14 & 17 X 2

Treats up to 130 litres of system water (16 radiators) and the equivalent of 250m2 of underfloor systems

Great Water 15mm OD x ½" BSP Brass Nut x 15" Superflex Large bore hose (Pair) 512115 Plumbing tools If the bottle supplied isDescription Plumbing Supplies product description: This product is the large bore super flexible hose from Great Water manufacturer. It's 15mm OD x " BSP Brass Nut x 15" Long Retail Pack (Pair). This product features are: Blow off proof Corrosion resistant 134% increase in flow Very Strong Individual corrugated for greater flexibility