2 Pack Center Screw Adapter for Theodolite Total Station Auto Level Surveying Tripod, Standard 5/8" - 11 Male Thread:

Grade A: Black Center Screw Adapter with 5/8 Thread Copper connector
Made of High Quality ABS Plastic & Copper Rod connector
Copper connector length: 4cm/ 1.57" (+/- 0.3cm/ 0.1") with hook

Copper connector length: 2.5cm/ 0.98" (+/- 0.3cm/ 0.1") without hook

Grade B: Orange Center Screw Adapter with 5/8 Thread Copper connector
Made of ABS Plastic & Copper Rod connector
Copper connector length:
40mm/ 1.57" (+/- 0.3cm/ 0.1")
33mm/ 1.3" (+/- 0.3cm/0.1")
25mm/ 0.98"(+/- 0.3cm/0.1")

Grade C: Orange Center Screw Adapter with 5/8 Thread Aluminum alloy connector
Made of ABS Plastic & Aluminum alloy rod connector
Aluminum alloy connector length:
32mm/ 1.26" (+/- 0.3cm/0.1")
25mm/ 0.98"(+/- 0.3cm/0.1")

Please Note:
25mm central scew for Level Tripod
32mm / 33mm central scew for Theodolite Tripod
40mm central scew for Total Station Tripod