The frame usually mounts three, four, or five polyurethane wheels.

Its design consists of a double-jointed twisting axle connected to two standing platforms surrounded by 9" polyurethane hubless wheels.

The standard model weighs 5.9kg, folds into a 73x36X22cm package and has polyurethane wheels of diameter 125mm or 110mm.

They are all amazed as the polyurethane wheels allow the skateboards to make the same carves on flat ground as surf boards on the waves.

He and his brother Brennan perfected the design, using a plastic-molded ski-type boot atop a blade of polyurethane wheels.

The Skatecycle contains a double-jointed twisting axle connected to two standing platforms surrounded by 9" polyurethane wheels.

Inline skates typically have 2 to 5 polyurethane wheels, arranged in a single line.

These extreme sizes of wheels almost always have cores of hard plastic that can be made thinner and lighter than a solid polyurethane wheel.

Same aluminum frame, same polyurethane wheels.

Nasworthy thought the soft polyurethane wheels would be ideal for skateboards and had his father send him 10 sets.