The Muc-Off Bio Drivetrain Cleaner is the complete drivetrain cleaning solution that is a fast-acting means to eliminate oil and wax residue from your drivetrain all the while be earth-friendly thanks to a biodegradable formula. This clean can either be poured into a chain cleaning device or sprayed directly onto your chain, chainrings, cassette, and derailleurs to clean your entire drivetrain within seconds. Its formula is also safe for metal, plastic, rubber, and seals. Features: Biodegradable formula safely eliminates drivetrain contaminants Removes all chain oil and wax residue Fast and effective grease-cutting formula Ideal for use with chain cleaning devices Trigger spray for easy application 500ml size