Pyramid Shape Wheel Chock used to lock the wheel allowing two-sided use of the chocks. This road safety wheel chock has durable rubber construction which gives resistance to abrasion tearing and all weather conditions. It is to be used for Medium Vehicles & trucks The rubber composition consists of 70% - 80% natural rubber and additives. Dimensions are 230 mm (L) X 180 mm (W) X 145 mm (H) Its approximate weight is 4 Kg.