Marson USA 5.5" Motorcycle Wheel Chocks T200-ETRACK - B This listing includes one wheel chock, one etrack mounting plate, and the hardware. Etrack sold separately. The same chock with extra side supports is available - please search: T200-ETRACK - HDB 1" heavy duty steel tubing. Constructed of black powder coated for a sharp appearance. Dimensions: Exactly 8.25" wide at the opening and 5.5" wide at the start of the radius x 9.25" high.