This does not affect your right to an exchange or refund for faulty equipment.
The Tandem is a double pulley for use on Tyrolean traverses, cableways and highlines on rope. The Tandem uses self lubricating bushings, and its attachment point accepts up to three connectors. The pulleys have a 71% efficiency, and will accept rope up to 13mm in diameter. The Tandem has a WLL of 10kN.