High-speed cruiser black skateboard soft wheels 70mm 78a black How about an upgrade or custom for a Penny board? Wheels Size: 70mm Hardness: 78a soft wheels Brand: Blank, no brand Stone ground surface for easy sliding These are special soft wheels that can smoothly ride on various rough roads, recommended for commuting to work or school. Depending on your pushing power and technique, you should be able to reach speeds similar to a mama-chari (Japanese commuter bike). Thank you.