Other type of tower crane boom are called topless cranes, which are characterized by having the head of the crane above the boom and lack of tensioning cables. This crane has an incredible engineering design, as does the compensation effort directly between the pen and the counterjib and also the steel material used in this type of crane is usually higher quality and more resistant to twisting. This is the main reason that cranes of this type are slightly more expensive than city cranes, but as improvements tend to reach higher ranks of pen and capacity.
The topless cranes can be from 50m of jib until 75m, and as for supporting loads from 1,000 kg at the tip of the jib, even some models that reach as maximum load 16,000 kgs.
Many of these cranes have the ability to be climbed, it means that from a free standing height, can reach a height adding short sections and anchoring the building or construction.