The Spitfire Formula Four Conical Full Wheel is a wider version of the conical shape, offering a wide riding surface with cut-in sidewalls to decrease weight. It's a solid, controllable shape built for all terrains, finished in a 99D durometer for a balance of grip and slide. Measuring 54mm with a 33mm width and 21mm riding surface, it's finished in Black. Part of Spitfire's Formula Four lineup, it's a dependable pickup for anyone after a wider, all-terrain skate wheel.