Seco 20 cm Fiberglass Extension – 1.25" OD - Flo Yellow The Seco 5130-10 is a compact fiberglass pole extension designed for incremental height adjustments in GNSS and surveying pole systems. It features 5/8" x 11 male and female threading for secure stacking of multiple extension sections, providing flexibility for customized pole configurations in the field. Key Features • Fiberglass construction for lightweight, non-conductive durability • 20 cm (0.20 m) extension length • 1.25" (32 mm) outside diameter • 5/8" x 11 male/female threaded ends for stacking • Ideal for modular GNSS and survey pole height adjustment