The NEOPERL adapter kit is designed to make ordering the right replacement parts easy, the company notes. It contains 17 adapters to solve almost any thread issue found in the field. The washer kit has an assortment of regular- and junior-size washers, perfect to replace the missing washer on the go. The kit features two different products in three different flow rates for shower retrofit. The water-saving aerator kit contains a wide selection of NEOPERL water-saving products.