With this tool you can gently remove the old bearing (as long as it does not install upto a shoulder.   Please check this on your machine first) by applying pressure through the clamping process of tighening the nut.   No more hitting with a hammer.   This is so much more precise.   The cup is deed enough to allow the bearing to be pushed out.

Once the old bearing is removed, you can use the same tool to install the new one.   The small spigot will locate in the bore of the new bearing thus preventing it from slipping off.   Again even, steady pressure can be applied to install the bearing.

Also included is a length of M10 studding and two nuts and washers for those that do not have a hydraulic press.   This allows a more controlled pressure to be applied to the bearing being installed than can be applied using a vice or hammer.

When ordering please state which bike it is for so I can make sure it will fit your bike.