Specifications: Concave Radius (Min. & Max: 1/32" -1-1/2" Convex Radius (Min. & Max.): 0" to 1-1/2" Max. Wheel Dia.: 14" Length of Angular Travel: 2" at max height Height Adjustment: 4" min to 7-1/2" max Base Dimensions: 3-3/16" x 4"