Dual performance-can be used manually or air actuated operation.Safety by-pass and over load system prevents jack from been used beyond its rated capacity.Foot operated release valve free oprator's hands to guide the load.Special 2 stages design enable work from olwer pick up point with higher reach capacity.Fully adjustable universal saddle with adjustable corner brackets and safety fasten belt.Equpped with handle, easy to move in all direction.Swivel caster wheels provide easy of moving and positioning.Chromed telescopic rams provide maximum stability.The strongest leg design provide stability.Country of Origin: Taiwan