HPI Racing Rock Grabber Tires are high grip tires designed for rocky terrain. These rock crawling tires are molded with sticky S compound rubber for excellent grip on all kinds of rocks. The blocky tread pattern wraps around the sidewall of the tire for extra grip in challenging conditions. These are true bead lock tires, made to fit HPI rock crawling wheels using 6-hole bead lock rings to keep the tire securely mounted on the wheel without the need for messy super glue.