[Material]: This gear puller is made of carbon steel, the mandrill tip through a special heat treatment process for strength and longevity [Function]: This 2-jaw bearing puller is designed and built to provide you with positive pulling power, to remove bearing groove pulleys on alternator and power steering pumps, which worksperfectly on motorcycle scooter bearings and gears [Adjustable]: the puller can be bilateral rotation, allow to stretch the size and working space; Two jaws with adjustable clamping depth, suitable for gears and bearings of different sizes [Easy to use]: use the two jaws to catch the bearing, then rotate the chuck with the thread, the bearing was slowly pulled out of the shaft [Wide Application]: Ideal for flywheel, motorcycle wheel, bicycle wheel, pump bearing generator bearing, machine bearing, etc.