Reckless Derby Wheels Envy - 62mm x 38mm SET OF FOUR.   Bearings and spacers sold separately.  The term 'hybrid' comes from when the first wheel with an OUTDOOR urethane was coupled with a INDOOR hub. It's also used on multiple surfaces for extra grip, or as some refer to as a 'pusher' wheel. The wheels are specifically designed for slick or ruff surfaces. The grip on just about everything, but come in the same shape as a standard wheel, not super narrow like a traditional outdoor wheel. In the case of the Envy, we have produced 3 sizes to accommodate all the key sizes used in derby, 82 durometer

• Name -
  82 durometer
  Name - Tink
  what durometer are these?
  

Tech Specs