That hub puller is for vehicles that have the rear drum attached with a locking taper and a nut holding the whole drum and hub assembly on. Some older jeeps and other cars from the early 50's had that type of rear drum attachment. The end of the hub is made to be struck with a hammer to help force the locking taper to loosen. I used one several times but it's been 40 years at least since I had to use one. Lots of luck finding someone who needs one. The other tools are clutch alignment tools that really work and line everything up right. Much better than the plastic junk you find now. Of course in their day those few tools would fit probably 98% of all cars with clutches.