Seco 25 cm Aluminum Extension – 1.25" OD (Yellow) The Seco 5145-00-YEL is a compact aluminum pole extension designed to increase overall pole height in GNSS and surveying setups. It features 5/8" x 11 male and female threading for stacking multiple extensions while maintaining secure, stable connections in the field. The 25 cm length provides precise incremental height adjustment without adding excess weight or bulk. Key Features • Aluminum construction for lightweight durability • 25 cm (0.25 m) extension length • 1.25" (32 mm) outside diameter • 5/8" x 11 male/female threaded ends for stacking • Standard yellow finish for visibility