The AT7903-PLUS pedestal improves stability via extra mid-level spreader with locks, providing smoothness and jerk-free operation. A built-in safety lock on each leg’s knob for quick and safe set up. Smooth movements in any desired height when you pull the orange latch up and lock column in position with the twist knob on the side. The sturdy foldable dolly EI-7005B has foot operated brake and cable guard on each 100mm wheel.