The 72mm MAC OH BOY's can be used for all type of skating including recreation, roller hockey, trick skating and aggressive skating. The 72mm MAC OH BOY is a superb street hockey wheel. The hardness or durometer of Pleasure Tool wheels range from 80A soft to 94A hard. The durometer of a wheel can affect the performance, durability, shock absorption, and traction. Soft wheels offer higher traction and the smoothest ride.
Hard wheels slide better, but have less shock absorption.
80A and 84A are great for general recreation and outdoor street hockey. The 88A is a hard wheel and is generally better for aggressive skating. Although if you play outdoor hockey and want a wheel that will slide easily and last a very long time then the 88A may be good for you. Trick skaters generally like the softer wheels. Aggressive skaters generally a like harder wheel.