Kilrock-K Descaler is the original multipurpose descaler, nothing performs like it. Ideal for metal and plastic kettles, steam irons, WC pans, showers, etc. Cleans heavily scaled kettles in minutes. It has a phosphate-free formula and is biodegradable.1 x Kilrock-Mega K Multi-Purpose Descaler 1 litre (12 Dose Bottle)