About This 2-IN-1 DRIVETRAIN CLEANER KIT – SPRAY & REFILL: Includes one 500ml Bio Drivetrain Cleaner with trigger spray for easy application and one 750ml refill bottle for long-term use. Everything you need to deep clean your cassette, chain, and derailleurs. FAST-ACTING, DEEP CLEANING FORMULA: This advanced bike chain degreaser rapidly breaks down built-up grease, chain oil, and wax residue, leaving your drivetrain sparkling clean and contaminant-free in seconds. EASY TO APPLY, VERSATILE USAGE: Spray directly onto your drivetrain or pour into your favorite chain cleaning device. Ideal for use with the Muc-Off X-3 Dirty Chain Machine or any standard brush kit. SAFE ON BIKE COMPONENTS: Formulated to be tough on grime but safe on metal, plastic, rubber, and seals—perfect for road bikes, mountain bikes, and gravel bikes alike. RECOMMENDED FOR MAX PERFORMANCE: Use after rides to eliminate drivetrain grime and prep for lube application. For best results, follow with Muc-Off Bike Protect and bike chain lube. Overview Brand : Muc-Off Item Form : Liquid Scent : Unscented Specific Uses For Product : Clean and degrease bike chains, cassettes, derailleurs, and drivetrain Material Feature : Biodegradable (OECD compliant)