Our relentless R&D team made our Nano Tech Bike Cleaner that much better by creating a handy refill concentrate gel! It's the same award-winning bike cleaner but in concentrated form! Just one 500ml pouch will make two liters of Muc-Off Bike Cleaner! Or, if you're really into bulk buying, our 5 liter concentrate makes up to 20 bottles of bike wash! Re-using is even better for the environment than recycling, and that's what makes the Muc-Off Concentrate so amazing. A 500ml pouch uses 89% less packaging than the equivalent 2 bottles of our 1 liter bicycle cleaner. So don't chuck out your old Bike Cleaner spray bottle; save it and save the planet. It gets even better. The Bike Cleaner concentrate can also be used as a powerful chain degreaser in its concentrate form and it works like a charm in Muc-Off's X-3 Dirty Chain Machine! How's that for multi-use?In case you were wondering, the Bike Cleaner Concentrate is safe to use on your bike's frame, forks, headsets, shock units, bars, grips, seats, pivot points, rims, wheels, spokes, hubs, disc brakes, suspension parts, gears/sprockets, aluminium, anodised metal, paintwork, chrome, carbon fibre, steel, plastics, composites, decals and rubber. It's the perfect addition to your bike cleaning kit. If you are using the Concentrate as a bike degreaser, simply apply directly to drive chain area directly from the pouch. Leave for approximately 30 seconds before agitating area with a brush and then rinsing with fresh water.