Flexiable Gravity and Powered Roller Conveyor Flexible Skate Wheel & Roller Conveyors provide an economical materials handling solution ideally suited for truck loading/unloading, packaging, and shipping and use on flexible assembly lines. They are self-tracking so product stays on the conveyor bed following the twist and turn of the conveyor path without using engineered curves. Adjustable in height via adjustable locking knobs to raise or lower conveyor height, they have heavy duty square tubing legs for longer service life. They are available in 450mm, 600mm widths and with steel gravity skate wheels and Through roller powered or Gravity free flow roller types and a large range of standard lengths.