Brand New & Unused Scalemaster 15mm Magnetic in-line Limescale Inhibitor with Speedfit Connections. When water flows through the inhibitor it crosses a magnetic field This causes the tiny crystals to adhere to each other altering their shape and size rendering them less likely to attach to plumbing. 15mm universal domestic use Requires no power source Speedfit fittings/slip coupling for swift connection 2year guarantee Single appliance protection Patented scalemaster technology -------------------------------------------------- Please don't ask if it's still available - If you're reading this, it is. If you're interested in the item, please drop me a message and, if possible, give me your number so I can call you back Can ship via carrier at cost if required.