Radio Frequency Universal Adaptor Kit. 40 Piece REVERSE POLARITY BNC, TNC AND SMA. STANDARD POLARITY MCX, SMB, MMCX, 1.0/2.3, AND 1.6/5.6If you are in the RF or Audio/Video market for long enough, you will need an adapter that you just don't have on hand. This 40 Piece RF Adapter Kit i..