Wireless freedom, made easy. The ideal entry-level wireless microphone system for small venues. BLX Wireless Systems provide professional sound quality with easy setup and an intuitive user interface. Choose from a wide range of transmitter designs (handheld microphone, body pack, headband microphone, lavalier, instrument clip microphone) and use with single and dual channel receivers as well as rack-mounted receivers. The rack mounting accessories include: 1 x rack mounting bracket, 1 x long rack mounting bracket, 1 x connection angle, 1 x thread adapter, 2 x quarter wave antennas, 2 x BNC bulkhead adapters, 1 x vinyl zip pocket, 2 x 22 inch BNC cables and 1 x mounting kit, the 8 x flat head screws #6-32. The RRRR, , 4 x pan head screws #10-32 to attach the BLX4R to the rack, and 2 x plastic plugs to cover the antenna holes in the rack ears.