The Remin Tri-Kart 750 Cart features push-button locking system with tubular polycarbonate handle and 6 inch roller bearing semi-pneumatic wheels. It has chrome plated solid steel wheel guards to protect loads and steel sliding base lock. It is constructed of chrome plated steel wire, curb/stair slides. Adjustable lock on permanently attached elastic cords prevents load shifting. Patented rear platform with swivel casters folds down into locked position to function as a 4-wheel dolly.