Quick Slicks CB72 tires are designed specifically for 15 x 13mm CB Design Wheels. Note because of the unique 2-rib design, they will not fit other wheels.
Multiple silicone compounds are available - this is the X-FIRM compound (part number: CB72XF).
Outer Diameter (O.D.): .807" (20.50mm)
Width (Contact Patch): .500" (12.70mm)