The main post is made from 167mm diameter round tube with 5mm thick wall. Other structural steel tubes are 60.3mm diameter with 3mm thick wall. Seat is made from 25mm thick weatherproof plywood with polyurethane (PE) protective layer. The axels have machine bearings, hermetically sealed. Axels are galvanized with zinc, covered with stainless steel shell. Resistant to moisture, temperature changes and dust, supplied with stainless steel bearings. Machine is powder coated, light grey color RAL 9006. Attached with four M18 nuts to the ground socket. The ground fastening flange is covered with a sturdy protective cover made from fiberglass.