The Oysi Inline Skating Chassis is designed for use with 72mm outer wheels and 60mm inner wheels incorporating a built in rocker to enhance agility.
Available in only one wheelbase length (281mm) featuring a huge groove centered between a 148mm middle wheel split.
Efficient use of the space beneath your feet yields an uncompromised groove, responsive control, and low profile.
Designed and Manufactured in the USA. (Sold in Pairs.)
One Size Only.
Does not come with Wheels
More in-depth info:
https://www.oysius.com/specifications-oisc/
https://www.oysius.com/rocker-calculator/
https://www.oysius.com/oysi-wheel-menu/