Roll-Line's bearing press is a great choice for your bearing maintenance. It will easily pull bearings out of derby skate wheels. The puller works by hooking up to the bearing and when the lever is pulled back, it draws out the bearing.
Furthermore, it has a pressing mechanism that will align your bearings perfectly inside the wheels.
Notice: This bearing press/puller is intended for roller skate wheels only. It will not work with large sized aluminum core wheels.