Marson USA 5.5" Motorcycle Wheel Chocks T101-ETRACK - HDSS Constructed of 1" heavy duty stainless steel tubing. Side support straps for extra strength and durability. Dimensions: Exactly 8.25" wide at the opening and 5.5" wide at the start of the radius x 9.25" high. This listing includes one wheel chock, one etrack mounting plate, and the hardware. Etrack sold separately Corrosion proof - it will never rust.