Cliff xlr shell lc duplex amp sc simplex feedthrough adaptors plastic shell cliff cp30216 an sc simplex mm connector mounted in a plastic xlr format body shell with countersunk mounting holes part of the ft series from cliffcliffs ft series of feed through connectors is perfect for custom io configurations on wall plates rack panels etc because all of the connectors in the series are housed in a standard xlr shell and fit into a standard xlr panel cutout standard cables are use