The NKD Metal Pro wheel is a fantastic choice for your stunt scooter! The wheel has a hollow aluminum core, which creates a great dynamic when you ride. It is the standard 100mm in size and has a nice hardness of 88A, which is neither too hard or too soft. The wheel comes in 3 different stylish colors, so you can choose the color that fits you best. Last but definiytly not least does the wheel come with ABEC-9 bearings that will guarantee you an incredibly smooth ride, everytime!