Diameter: 66mm
Width: 46mm
Contact patch: 38mm
Durometer: 82a
Formula: Soft Slide
Lip profile: Round
Surface: Ungrounded
Core placement: Centerset

Details from Powell Peralta:

Primos are an affordable soft wheel with extra urethane depth which is perfect for cruising and upgrading completes, but at their heart are poured in the same high performance freeride and downhill formulas that are world renowned for slide performance.

the 78a 69mm is “Paster” formula.