^ Indeed!, Just to see how good this item was I didn't bother with any pre-treatment works ie no cleaning up the keyway groove, no heating the hub, or hitting it with a hammer etc. Although the keys were tight, I was able to remove all of them with the 1/2" ratchet you see hanging off the end of the tool.
The hydraulic puller you also see, although being at the limit of its size capacity dealt with pulling the flywheel, and flat belt pulley with ease.