Advanced cleaning technology for intake valves. Not a throttle body cleaner. Delivers concentrated advanced Cozol technology directly to the backs of intake valves. Dissolves baked-on carbon deposits. Improves MPG. Increases power and reduces rough idle. Effective for use on GDI and standard PFI engines. Also comes with 2 pairs of CLC latex gloves 5 mil. industrial grade pre-powdered disposable gloves with rolled cuffs that can be worn on either hand.