Giotto Obbligatorio (63 MM) is a class of wheels designed for training, testing, and competing in Obbligatorio (figures & loops) and should not be used by hobbyists on indoor or outdoor surfaces because they're too slippery for recreational use and are designed solely for Obbligatorio. Giotto Obbligatorio is available in five (5) hardnesses, or colors, which you should always choose by the surface on which they will be used. Please see the image in our media gallery above for more information.
 
MATCHING BEARINGS
When these wheels are used with Roll-Line's artistic frames, Speed Max (7 MM) bearings are your best bet—but they are not included with this purchase. Should you not have a bearing press, you may want to consider our Combo Obbligatorio, so Speed Max's 7 MM bearings are inserted for you and ready for use. 
 
COACH'S NOTE
For more information about this wheel and all wheels, including all Combos, please see our ProGuide on Bearings and Wheels.