Rubber wheel chocks from Freyer get the job done.  Our Laminated Rubber chocks are heavy duty and made of tough rubber plies  together between a rigid metal frame.  All rubber wheel chocks are available with chains or in kits with chain, sign and hanging wall bracket. Scroll down to find your model.  Select options after clicking on order now.  All metal wheel chocks are OSHA 1910.178 (m)(7) compliant.