The SECO Thumb Release™ Open Clamp Bipod allows the user to simply clamp the pole into place without lifting and threading it through the bipod head! Within seconds the operator can set up a free standing GPS antenna pole or prism pole. Legs extend to 6 feet (1.8 m) for use in uneven terrain. Collapses to 43 inches (109 cm). Weighs 4 lb. (1.8 kg). SECO created the Thumb Release bipod and tripod concept. Go with the original! Note: 1-to-1.25 inch (25-to-32 mm) O.D. poles attach from the side. 1.5-inch (38-mm) poles fit through the top only. - Comes with a no-crush bipod head design, which protects prism poles or carbon fiber range from crushing even when you use excessive force - Allows the operator to set up a self-supporting GPS prism pole or antenna pole 1 to 1.25 inches (25.4 to 31.8 millimeters) from the side - Has independent telescopic legs that can extend from 42 inches to 6 feet and collapse to 43 inches - All-metal design that fits all the common pole sizes - Lightweight and easy to transport - Easy setup on various surfaces, including uneven, hard and slippery surfaces - Aluminum construction - SECO-developed thumb-release bipod concept. - Thumb-release locking mechanism that allows the operator to attach or detach the pole lighting easily