5.5" Removable Etrack Wheel Chock - Black Model # T200-ETRACK - B Made in the USA by Marson International, LLC - **This listing includes one wheel chock, one etrack mounting plate, and the hardware. E track sold separately. ****This Marson chock doesn't have the side support straps like the other two models have. Therefore it costs $5.00 less. This chock's uniquely angled sides protect tire sidewalls. This will also prevent brake disc contact. The high quality wheel chock is designed to stabilize the front wheel of a motorcycle when transporting on a trailer or a pickup truck. The unique design allows this wheel chock to fit all tire sizes up to 140mm (6.0") wide. If your motorcycle has a 150mm wide tire we recommend a 6.5" wide wheel chock or a versatile, self supporting, Condor Wheel Chock. They are available in our Amazon store. When using this chock for a narrow tire understand that sidewall clearance means little, your main concern is stopping forward motion. These removable etrack chocks are ideally suited for trailer installation, on either a wood or metal surface and are designed for quick installation and removal. It comes complete with all the necessary hardware and instructions. Please note: The etrack chocks will have about a 1/2" gap between the chock and the floor where the chock overhangs the etrack. We are OK with the gap, however if you prefer extra stability it doesn't hurt to attach a spacer made of wood or a similar material directly to the chocks' plate.