The Cambo UBS ball bearing double arm comes with ball-bearing rollers to allow lateral movement.

• This ball bearing arm includes accessory mount at both the ends
• The maximum and the minimum movement of this UBS studio stand from the center column to the end of arm are 280 mm/11" and 720 mm/29" respectively. The movement is applicable both to left and right
  

Ball Bearing Crossarm for UBS/UST

Crossarm with ball-bearing rollers lateral movement. Includes accessory mount on both ends.
Movement from center column to end of arm: min.280 mm / 11", max. 720 mm / 29" both to left and right.