Pro Trucker Push-n-Twist CB Radio Antenna Quick Disconnect Quickly remove your antenna without fumbling around for tools - includes a theft proof design for those who are not used to the quick disconnect method Locking pin and the spring are made from stainless steel and guaranteed to last for a long time 3/8 x 24 thread for all standard antennas and accessories used during installation Built for antennas up to 5' in total length, not recommended for any size larger Push it down slightly and turn just a bit is all that is needed to remove the antenna for convenient storage