Features: Professional Bearing Puller with Blow-Molded Portable Cases: For removing bearings with an inner diameter of 9mm to 23mm. By heating the collet, positioning the tool, and rotating to extract the collet, the bearing is easily removed. Preheating the tool before use avoids using the puller with too much force. This is a very useful variant of internal bearing pullers for mechanics. Wide Application: The wheel bearing puller kit is used to remove blind gear bearings, bicycle bearings, needle roller bearings, ball bearing pullers, wheel bearings, alternator bearings, etc. By connecting the male valve thread, the external pulling force of the tool is used for efficient removal, increasing the efficiency of the bearing puller tool. High Quality: The inner bearing puller is made of high-quality chrome vanadium steel with strong hardness, good wear resistance, not easy to bend, well-made, coated with anti-oxidation, anti-corrosion, and anti-rust layers, can be used for a long time. Easy to Use: Select a screw rod that matches the inner diameter of the bearing and the collet to insert it into the bearing, turn the screw until the collet is fully open and fits tightly against the inner wall of the bearing. Select a tube and a spacer with a larger outer diameter than the bearing to insert into the screw. After installation, tighten the nut with a wrench.