The SitePro 4250 aluminum tripod creates free-standing setup for GNSS antenna poles or prism poles. Feature large, thumb release buttons for quick setup on even or uneven ground. Features Top mount universal head will accommodate 1 to 1.25 inch diameter Open height: 71" (180 cm); Closed height: 42-1/2" (108 cm) Impact resistant materials, replaceable shoes, and quick release telescoping aluminum legs Legs extend independently up to 6 ft (180 cm) Fine adjustment knob to fine tune your setup