The Diamond AM600 Telescoping Aluminium Mast is 6 meter tall, yet collapses to a mere 1.6 meter and weighs only 1.5 kg! You simply pull out each section and twist lock nuts to lock. It extends to a 6 meter - more than a quarter wave on 20 meters! The bottom section is 3.4 cm in diameter. It's great for portable and temporary use - traveling, camping, from hotels, hamfests, field day, DX-peditions. Put up a full size inverted Vee dipole or full size vertical antenna in minutes and get full size performance!