The SitePro 2090-24 GPS quick-release adapter is designed for adapting Leica style snap-on prisms to 5/8-11 tribrach adapter or prism pole. 

• Black anodized aluminum adapter with female 5/8-11 thread on the bottom, Leica-style connector on the top
• Adds* 23.8 mm to your GNSS or prism pole length
• Quick-release connector top
• Weighs 0.05 lb (0.02 kg)

*Note: Consider heights in your software or when post-processing your data in the office.