Seco Construction Series Thumb-Release Bipod – Yellow The Seco 5217-40-YEL Construction Series Thumb-Release Bipod is a durable field support system for prism and GPS poles , designed for stable freestanding setup in surveying and construction applications. Built on SECO’s proven thumb-release design, it provides reliable performance with added convenience for transport and jobsite use. This bipod features a No-Crush head design that prevents damage to carbon fiber or aluminum poles even under excessive clamping force. It accommodates 1" to 1.25" (25.4–31.8 mm) diameter poles through the open clamp, with 1.5" OD poles loadable from the top . The independently adjustable legs extend up to 6 ft (1.8 m) and collapse to 43 in (109 cm) , and it includes a carry bag and leg clip for secure transport. Key Features • Thumb-release clamping system for fast setup • No-Crush head design protects poles from over-tightening damage • Compatible with 1"–1.25" (25.4–31.8 mm) poles • Supports 1.5" OD poles via top loading • Independent leg adjustment up to 6 ft (1.8 m) • Collapses to 43 in (109 cm) • Includes carry bag and leg clip • Standard yellow finish