Yes, you can use Rollerbones wheels and bearings for skateboards, but they are designed primarily as roller skate wheels and roller skate bearings.
Rollerbones bearings come in packs of 16 bearings, or enough for 8 wheels. This means you can use them in your inline skates or quad skates.
Rollerbones wheels and bearings are most commonly used by skaters as rink wheels, derby wheels, skate park wheels, or just general use outdoor wheels.