Folding choc for up to 44" tire diameter, sold per each: Our NFPA 1901-09 and SAEJ348 compliant choc requires less storage space. This folding aluminum wheel choc, model SAC-44-E, requires only 6" H x 1-1/2" W x 20-3/8" D area for storage. "Easy-Grip" carrying handle makes transport and placement of choc a snap. Maybe used with tires up to 44 inches in diameter. Choc features high tensile strength aluminum construction, large rear opening hand grip and a double row of rugged teeth to grip almost any surface.