Quick Slicks CB71 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: CB71XF).
Outer Diameter (O.D.): .787" (20.00mm)
Width (Contact Patch): .500" (12.70mm)