2. Snap On puller sight. 2 big jaws , 3 medium jaws , 2 pair small jaws. I think it's missing a piece.
Looks like two separate pullers. The 2 big jaws and 3 medium go with the 3 jaw yoke and other 3 jaw spider thing which is used to tighten the jaws up around whatever you're pulling. That one is probably complete other than the missing large jaw.
The 2 small pair with holes go with the 2 jaw yoke. It should have a draw bar, with a hole in it to clear the forcing screw, which pulls the legs together. And the forcing screw looks like it should go with the 3 jaw. Way too long for the 2 jaw.
If you can't find the pullers on Snap-ons website or the catalogs on collectingsnapon.com let me know and I'll take a look at my catalogs.