1LONG LASTING CONSTRUCTION: This prism rod adapter is made of stainless steel and is ideal for workplaces near salt water because does not rust 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 4APPLICABLE MODEL: This measuring adapter is applicable to most prisms and is applicable to any 1/4 to 20 inch tripod adapter, prism rod and tripod 5EROSION RESISTANT STAINLESS STEEL: Stainless steel material prism pole attachment possess erosion resistance, good mechanical properties, and high strength 1 x Prism Pole Adapter