Muc-Off Bio Dry Bike Chain Lube - 300ml Aluminum Refill Bottle. Muc-Off Dry Chain Lube is a durable deep penetrating Chain Lubricant and oil thats formulated to hold up in extreme conditions. Muc-Off Dry Lube is a highly versatile dry weather chain oil that has state of the art penetrative qualities to ensure that the lube is driven deep into each chain links core. Muc-Off Dry Lube is biodegradable so its safe for you your bike and the planet.Wax based formula excels in dry dusty conditionsAdded protection against contaminantsProvides smooth and quiet gear shiftingCan be applied to chain cables shifters and derailleurs