Solid Material: ;Ball bearing puller is made of carbon steel, the mandril tip through special heat treatment, more solid and durable. Extended Space: ;Puller can be bilateral rotation, allow ;stretch the size and ;working space. Adjustable Size: ;2-jaw bearing pinion puller with adjustable clamping depth, suitable for different size gears and bearings. Multiple Applications: Ideal for engine flywheel, motorcycle wheel, bicycle wheel, pump bearing generator bearing, machine bearing, etc. reinforcement equipment. The ball bearing puller comes with hex screw and thread for fixing, maximum strength and high toughness. Note: Please allow 1-3cm error due to manual measurement. Thanks for your understanding.