1、LONG LASTING CONSTRUCTION: This prism rod adapter is made of aluminium alloy to ensure that its integrity is maintained during continuous wear in the field 2、FINE WORKMANSHIP: Prism pole adapter is made after exquisite casting, integrated molding, bring accurate detail processing, and neat thread inside 3、WIDE APPLICATION: Prism adapter is suitable for tripod, observation pier, base alignment rod RTK, prism and other equipment alignment connection 4、WIDE APPLICATION: This prism rod adapter is suitable for prism, 5/8in‑1 to 11/4in‑20 connector 18.5mm long, is a measurement adapter for GPS or RTK base connector 5、LIGHTWEIGHT AND PORTABLE: The quick release adapter take up almost no space and is light enough to carry to the job site in your pocket, useful and practical Item Type: Prism Pole Adapter Model: AD-E01 Material: Aluminium alloy Specification: 5/8in-1 to 11/4in-20 connector Length: Approx. 18.5mm / 0.73in 1 x Prism Pole Adapter