Quanlity Alumunum Alloy Material .
Designed Adapter for GNSS and Optical Surveying Instruments .
GAP-L1 is Leica-style snap-in thread (12mm) with M12 thread.
GAP-L2 is Leica-style snap-in thread (12mm) with 5/8-11 UNC (15.87mm) screw .
GAP-U1 is 5/8-11 UNC (15.87mm) thread and M12 thread .
GAP-U2 is 5/8-11 UNC (15.87mm) screw and thread .
GAP-T1 is Topcon/Sokkia -style adapter with M12 thread .
GAP-T2 is 1/4 inch (6.35mm) thread with 5/8-11 UNC screw (15.87mm).