ARB GT Recovery Sand Board is made from high-quality automotive-grade polypropylene construction The recovery sand board features the same revolutionary design characteristics that you can expect from other TRED products This recovery sand board uses a database of hundreds of tire tread patterns, ARB was able to develop their TRED Link With a variable tooth design, TRED GT recovery boards will provide secure traction with any tire These recovery boards easily stack, and can be mounted and stored conveniently