Conical shaped 54MM, 32MM, SHR100A wheels for all your skating pleasures. An exclusive formula of urethane is used to create these durable and hard-wearing wheels. These wheels are hard yet feel like a tad softer. High rebound from the wheel helps absorb impact from those hard jumps. Conical shaped for those skaters looking to level up bowl and/or street skating and for a more consistent and forgiving lock-in for those tricky grinds Note: these wheels are sold in packs of 4, so you'll need 2 packs for a pair of quad skates.