The Undercover JayPro 58mm Wheels are designed for aggressive inline skating (tricks and stunts on obstacles). These wheels are particularly specialist and may not be for everyone. 

This 4-set of wheels comes in two durometers (hardness). Two wheels are 88a and two wheels are 92a. There we recommend you do not use these wheel if you are using – or plant to use – an anti rocker setup. 

For a balanced setup we suggest you purchase two sets and use 4 x 88a wheels on the outside and 4 x 92a wheels on the inside.