1LONG LASTING CONSTRUCTION: This prism rod adapter is made of aluminium alloy to ensure that its integrity is maintained during continuous wear in the field 2FINE WORKMANSHIP: Prism pole adapter is made after exquisite casting, integrated molding, bring accurate detail processing, and neat thread inside 3WIDE APPLICATION: Prism adapter is suitable for tripod, observation pier, base alignment rod RTK, prism and other equipment alignment connection 4WIDE APPLICATION: This prism rod adapter is suitable for prism, 5/8in1 to 11/4in20 connector 18.5mm long, is a measurement adapter for GPS or RTK base connector 5LIGHTWEIGHT 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 1 x Prism Pole Adapter