They are small structures of easy installation and low cost, so they are an excellent choice for installation in high places, such as the roofs of buildings; they should be used for moderate loads, which means a smaller number of antennas, its height ranges from 6 to 24 meters. They are regularly used to support the laying of fiber optics, GPS antennas, 4G and 5G.

They consist of one or several truncated cone-shaped elements of polygonal section. For design purposes, quality of materials and manufacturing standards we are governed by the following standards: ASTM A123, ASTM A153, ASTM, A570, AWS and DE1.1-74.