All clamps are high quality zinc die-cast. The leg construction and large fixed foot end caps enhance safety and stability. This professional stand is TÜV (German Technical Supervisory Agency) approved for a maximum central load capacity of 110.231 lbs. Other features are the pull-out guard for the extension tube, the integral anti-shock component and comfortable height adjustment with spring-loaded bolt and locking screw. Comes with a mounting aid on the extension rod.