Piper Wheels - Zero Derby Wheels (4 Pack) Variant:Purple 91A One Pair comes with a

One Pair comes with a left and right knee gasket

Talk about a winning color

Piper Wheel's newest collection for experienced derby skaters

Small pockets for phone

5 Size 54mm Wheel Hardness 99a Width 37

Piper Wheels - Zero Derby Wheels (4 Pack) Variant:Purple 91A One Pair comes with aPiper Wheel's high quality wheel developed especially for derby players. Durometers: 88A (Blue) 91A (Purple) 93A (Green) Size: 59mm x 38mm Piper Wheels 1987, in Huntington Beach California where it all started. Neal Piper an employee of Hyper Wheels quickly became a renowned scientist, brewing skate wheel formulas in the late 80s. Forty years later, Neal continues his passion of making the Worlds fastest wheels as an owner operator of Aend Industries.