The 508 Telescopic above ground spreader helps you to setup your tripod more easily on steps, slopes or uneven rocky terrain. The spreader achieves rapid set-up and pull down by keeping the tripod legs at an equal or preset distance the telescoping spreader arms allow extension of the a tripod leg without detaching the spreader. The 508 spreader is suitable for use with the 402 and the 420 2-stage Tripod. </p>