Brand new DNA formula is perfect for surfskate boards 30'' and longer such as Carver Skateboards and YOW Surfskate Boards. Fast, soft and superior grip is excellent for cruising, carving, freeride, downhill on all longboards such as Sector 9, Landyachtz, Loaded Boards, Arbor Longboards, Dusters, Santa Cruz Boards, Globe Longboards and Bustin Boards. Shark Wheel is the best wheel in the world over rough terrain (pebbles, debris, sand, water) with over 500 verified purchase 5-star reviews. All DNA formula wheel purchases come in sets of 4 wheels total and fit all standard longboards. Made in California, USA Skateboard wheels, Longboard wheels, Orangatang, Sector 9, Butterballs, Abec 11, Seismic wheels, Carver Skateboards, Roundhouse wheels,