lbs: 0.682

kg: 0.314

lbs: 15.4

kg: 7

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

Aluminum

mm: 56

inch: 2.2

Bottom External: 3/8″-16 EXT.

mm: 56

inch: 2.2

Top External: 1/4″-20 + Nut

mm:112

inch: 4.4