Broad Bay Boards Salt Licks Longboard Hybrid Wheels 70mm 80a (4) Hybrid Wheels: Excellent for Cruising, Phenomenal for Sliding 70mm Diameter for Longer Rides and Wheel Life 50mm Contact Patch for Grip, Control, and Predictability in Slides 80a Durometer (Hardness Rating) to Absorb Bumps and Vibrations but Still Lay Down Lines of Thane Polyurethane Casted