The 450 Series Rubber Wheel Chocks are the standard of the utility industry. With its durable rubber construction and simple triangle design, this rubber chock can be positioned on either side against a tire. Company fleets such as utility and telephone vehicles use this product for additional stability while working. Each Rubber 450 Series Wheel Chock comes with a steel loop-carrying handle for easy transport and set-up.For snow, ice and off-road environments, the RC-450CL model wheel chock comes with an Ice Cleat Bottom that digs into the ground for extra support. All wheel chocks are sold as a single piece unless otherwise specified.