The Polyplumb Manifold Wheels are a set of two green plastic wheels designed for use with vehicle air conditioning tools. These wheels feature open/close indicator knobs, making it easy to control the flow of air through the system. The Polyplumb brand ensures quality and durability, making these manifold wheels a reliable addition to any garage or workshop. Perfect for maintaining and repairing vehicle air conditioning systems, these wheels provide a convenient and efficient way to work on your vehicle's cooling system.