Pure Water System/12' Pole ComboProTool and SimShorty Combo Kit The ProTool RO DI Cart paired with the 24 ' Samara water fed pole is an exceptional window cleaning setup. The Protool RO DI is efficient, durable, and user friendly. This RO DI Cart is loaded with essential features, including a built in TDS meter, three way valve, pressure gauge, on off valve, and more, providing users with comprehensive control and monitoring capabilities. Its solid wide base and stainless steel