CANNOT SHIP TO CALIFORNIA Used by truck drivers for checking their tires, the sound tells them if their tires have low air pressure. The Tire Thumper is made from the wonderful smelling cedar wood, with a shellac finish. The Tire Thumper can also be used for other things that might need thumping . •Leather wrist thong •8 strip grip handle •Made from Cedar, with a shellac finish •20 ounces •19 long; 2 diameter •Has lead core.