Replacement Stainless Steel Spring with Ferrule (whip adapter) for 2.5 mm (.1") whip. For Tram, Browning, and other compatible land mobile antennas: BR167BS, BR168B, BR168BS, BR187BS, BR1794BS, BR150B, BR150BS, BR158B, BR158BS, BR455B, 1150B, 1150BS, BR136, BR137, etc. 5/16" threaded. Comes with two screws. P/n 1214B, Tram.