lbs: 0.792

kg: 0.356

lbs: 8.85

kg: 4

** Max. Weight load when the arm is fully open

Aluminum

mm: 110

inch: 4.33

Bottom External: 3/8″-16 EXT.

mm: 110

inch: 4.33

Top External: 1/4″-20 + Nut

mm:220

inch: 8.66