The carbon fiber bipod + prism pole is a perfect combo for all surveying applications. Thumb-release heavy-duty bipod accommodate range poles up to 1-1/4" in diameter so you can clamp the pole into place without lifting and threading it through the bipod head. The bipod provides added stability, which is particularly useful for high accuracy mapping to ensure the antenna is held still. Thumb release lock design allows locking tensions to be adjusted without disassembling the legs. Legs extend to 72" (1.8 m) for use in uneven terrain and collapses to 43 inches (1.09 m). Weighs 3 lb (1.36 kg). The carbon fiber and aluminum construction makes TPI robotics poles up to 30% lighter than similar poles. This pole is designed to be compatible with all targets, prisms, and GPS antennas. It's perfect for use with robotic total station. The two stage 5/8 X 100 threaded tip adjusts for accurate height. Locking pin can be used for set height at 6',7',8',8.5' or for metric 1.8m,2.0m,2.2m,2.4m,2.6m. This pole telescopes to 8.6 ft (2.62 m) and collapses to 4.66 ft (1.42 m) Weighs 2.3 lbs (1.04 kg). Storage/Carrying cases included