The Electro Voice RMK2 kit contains all necessary items to couple and mount two RE3-RX receivers into a 19" rack. The bridging plates firmly couple two receivers together ensuring the receivers are held securely in a rack. The rack ears easily mount to the receiver's threaded mounting holes using the provided screws. The threaded front flange mount ends of the antenna cables mount into the rack ears and securely mount either the stock receiver ½ wave antennas, or coax extension cables for remote antenna applications.