Exercise Ball Chair Upgrade Wheels - Set 4 - Larger, 60mm/2.5" Office Size Wheels - Adds .5" (1/2") to Plastic Ball Chair Height (Versus 50mm/2" Wheels)

Note: Not needed for Isokinetics Inc. branded plastic ball chairs. These 60mm/2.5" wheels already come standard on current Isokinetics Inc. branded plastic ball chairs. However, most similar chairs from other brands come with 50mm/2" wheels. If that is what you have, this set of 4, 60mm/2.5" chair wheels is for you. Two of the 4 wheels in this set are lockable (we recommend putting the 2 lockable wheels in the rear to avoid accidentally locking them). **Please MAKE SURE** you do not already have 60mm/2.5" wheels before you order. Also, these wheels do not work on METAL frame ball chairs, which have 5 wheels and require a special stem these do not have.