Maxitrol - 5047 - K - 1.1 referenced Spring kit K R5310; spring kit for RV53, R600 product produced by high technology. You can ask all the codes and references except 5047 - K - 1.1 too. We are one of the few companies which can present an offer for this product. It produced result of tests of laborotory for years. Make an offer to us for 5047 - K - 1.1 please contact us.