Carbon fiber Thumb Release bipod uses the same design concepts as the famous SECO aluminum, Thumb Release Bipod, but weighs less. 1-to-1.25 inch (25.4-to-31.8 mm) diameter poles attach easily through the open clamp 1.5 inch (3.81 cm) OD poles can be loaded through the top Legs (independently) extend to 6 feet (1.8 m) and collapse to 43 inches (109 cm)