Firefly formula (Light Up Wheel) with multi-colored lights Excellent for cruising/carving; Firefly wheels fit smaller decks | Penny Boards & Cruisers 60mm - 78a - Skateboard Wheels Fast, soft and superior grip Best wheel in the world over rough terrain (pebbles, debris, sand, water, etc) All Firefly wheel purchases come in sets of 4 wheels total Fits all standard cruiser skateboards, such as Sector 9, Landyachtz, Loaded Boards, Arbor Skateboards, Penny Skateboards, Carver Skateboards, Dusters, Santa Cruz Boards, Globe Skateboards and Bustin Boards. Add Shiver Abec 9 Bearings to your cart for the ultimate setup