Manufactured from steel tube & polyester powder coated white. Bottom uprights 89mm diameter x 3.2mm thick. Top uprights 76mm diameter x 3mm thick. Crossbar 5.6m long 76mm diameter x 3.2mm thick. 1200mm deep sockets with 91mm inside diameter stabilising fins & base plates. Sold per pair. Hinged adaptors with high tensile bolts make erection of posts safer.