LED Light Spring Release CB Antenna. This spring base is for LED , fiberglass CB Radio Antenna , Center Loaded Mobile Antenna, 102" (Fits screw with Min diameter of 0.448" and Max diameter of 0.465" )Spring Mounting Base is made of strength carbon steel, the Anti is sturdy, durable, shock resistant, and not easily deformed.Spring Base lights, the thick on the spring is rust resistance, smooth surface.The spring structure design can effectively protect your Lights or antenna, providing flexible protection from impact and vibration.Spring Mounting Base for LED Light with *30 thread is suitable for a wide range of vehicles, for UTV , ATV , trucks, boats etc.LED Light Spring CB Antenna . LED Light Base Quick Release. Heavy Duty UTV ATV Truck Car ing Base. Hardware x30 thread durable shock resistant. Center Loaded Mobile Antenna Spring sturdy.