The IWI 60-7211 SC-6 wheel chock helps prevent parked vehicles from moving, is made of aluminum for strength, has cleats on the bottom for gripping ground surfaces in many weather conditions, and fits many tires with a radius of up to 22.5 inches (22.5R). The aluminum chock weighs less than many solid rubber and iron chocks. It measures 6 x 6 x 6.8 inches (H x W x L). (H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; L is length, the horizontal distance from front to back.) This chock is sold individually, but is recommended for use in pairs.
Wheel chocks (also called wheel immobilizers or chock blocks) are designed to help prevent vehicles from accidentally rolling when parked, especially on a grade. Primarily for the safety of workers when a vehicle is undergoing maintenance, or being loaded or unloaded, use of wheel chocks can also reduce property damage from accidents and loss from spillage during loading operations. Wheel chocks are typically wedge shaped, and the size required depends on the weight of the vehicle, the size of the tires, the steepness of the grade, and the quality of the road surface. Large wheel chocks are usually made of a durable material with a high strength-to-weight ratio, and include handles or ropes to facilitate manual deployment. Occupational Safety and Health Administration (OSHA) and Mine Safety and Health Administration (MSHA), both agencies of the U.S. Department of Labor, require wheel chocks in several specific situations (including when parking on a grade and during loading operations).
IWI manufactures loading dock and material handling accessories for the warehousing, freight and shipping, and manufacturing industries, among others. The company, founded in 2004, is headquartered in Sparks, NV.