Variable drag: Use this to slow down fast-moving clients, prevent veering, or help clients navigate corners. Vary the drag by rotating the dial from zero to max.
Brakes: Independent of the drag function. To apply, depress bottom half of white brake pedal; to release, press top half.
Swivel lock: Each caster swivel-locks independently. Lock all 4 to help clients walk in a straight line, or just the two rear casters to eliminate drifting sideways. Release swivel lock on all casters for movement in any direction.
One-way ratchet control: Set each caster to prevent involuntary backward movement. Works best when casters are also swivel-locked.