Night Genesys wings are manufactured from pure UHMW- the smoothest, fastest, longest-lasting grinding/shuffling material available. The wings are designed to replace the positive side of Razors "four-piece" nylon soul system, and offer a slightly larger, more durable soul that's the same size front and back for more consisent cess slides. Dimples on the plates increase speed on rails and coping, and as they fill with wax, help lubricate grinds on sticky objects. Unlike the stock plates, Night wings are symetrical and designed to be rotated from skate to skate if you wear one soul down faster than the other- twice the bang for the buck! Includes four soul pieces for one skate.