The Bont Flow roller skate wheel series is designed for park and aggressive street skating The special wheel edge design minimizes wheel bite on coping rails and ledges for the perfect slide or grind The skate park roller skate wheels comes in two hardness 89a Street or 99a Park The wheel size 58mm x 32mm is great for agility and quick turns Sold in a pack of 4 or 8 Bearings are NOT included