Description: 【Product Size】: The wheel chock blocks size is 21cmx11cmx10cm/8.27inchx4.33inchx3.94inch, Ideal for most trailers and car 【Premium Material】: This wheel chock block is made of quality rubber material, which is sturdy, has a long service time 【Wide Application】: Double wheel chocks front and back can be used for a variety of purposes, is suitable for trucks, trailers, aircraft, RVS, etc., to avoid your vehicle from rolling away, to meet diverse needs 【Yellow Reflective Tape】: The tires block stopper chocks each wheel stop has a three sided reflective tape that ensures high visibility, even in low light conditions, and keeps your vehicle or trailer safe 【 Protect tires 】: Wheel Chocks, rubber material has a good anti skid effect, which can fix the car in the proper position and protect the tire from being scratched by hard objects on the ground Specification: Material: Rubber Size Chart: 21cmx11cmx10cm/8.27inchx4.33inchx3.94inch Package Includes: 2 Pair(4 Pack) Tires Block Stopper Chocks Note: Please allow slightly errors 1-2cm differences due to manual measurement.