These Stubby Antennas are engineered for exceptional reception. Made from 1/4 inch stainless steel or 3/16 inch stainless steel. All antennas come with 6mm female threads. Chose from the following styles: polished, black powder coat, white powder coat, 0-ring, laser flame or flat-top. Length choices include 6, 9. 12, 15 or 21 Antennas will fit most vehicles and include 3 adapters 5mm male to 6mm male, 10-24 male to 6mm male, and 7mm female to 6mm mail We also offer additional antenna adapters. Call or e-mail for details. Be sure to let us know what your vehicle make, model and year is when ordering to ensure proper fit.