This package will refill your CR Spotless di-20 system. It can also be ordered to refill your di-10 or di-120 and it will refill those systems. We worked hard to develop this proprietary resin formula that provides the performance We demand from our systems. We test every batch before it leaves the warehouse to ensure you receive a quality product that We gladly stand behind. Don't risk your work surface finish with anything other than proprietary, quality resin from CR Spotless.