NFPA Wheel Chock Individual 8"x8"x12"Heel-to-toe length allows for a steeper line of force between axle and rear teeth, and therefore an enhanced coefficient of friction. Hand-grab opening allows for fast placement and retrieval. Flanged base allows a full range of bracket options. Easily manage the many conditions fire apparatus are likely to encounter including hazardous road conditions, heavy vehicle weights, large tire sizes, solid bottom and steep grades. High adhesion and high...