You can put these on regular skateboards, but there is a good chance you will get wheel bite as you turn. You'll need to use fat risers to lift the deck up enough to avoid this or look for a longboard with wheel cutouts like our many drop-thru decks.
The durometer refers to the hardness of the wheel, the higher the durometer the harder the wheel. The most common durometers for longboard wheels will be on the softer side when compared to standard skateboard wheels and fall in the 75a-90a range. You'll commonly see 75-78a wheels for the more grippy types, like our 70mm 78a longboard wheels.
60mm +, We recommend our 70mm Shark Wheels. Our Wheels are made for speed and rougher surfaces. They are great for specialty riders skating longboards, downhill boards, dirt boards and old-school boards.