This retrofit kit, model KA2-R, is used to replace the following Watts(R) IntelliFlow(R) models, A2-WB, A2C-WB and A2C-WB-M1, with the new IntelliFlow model A2C-WB-M1. This kit contains (2) brass adapters, (2) screws, (2) brass sleeves, (2) stainless steel washers, (2) brass union fittings, (2) brass union nuts, (6) O-rings and (1) grease packet.