If you already have the foaming trigger bottle, the 1L concentrate refill bottle works out even cheaper than the kit at only £1.56 per litre, making 8 litres in total and saves further on the use of plastic. Uberbike 8.0L Bike Wash is developed and tested in the UK for the quick and easy removal of mud, dirt and grime. Just add water. Multi purpose application safe to use on Disc Brakes, MTB/Motorbikes/Dirt Bikes, ATV's, Off-Road Vehicles. Non caustic formula safeguards aluminium and anodised components, as well as brakes, painted finishes, carbon, rubbers and plastics. Environmentally friendly, 100% Biodegradable and reduced use of plastics by 75%. Rinse aid additive actively repels water for streak free finish and quick drying time.