The tusk act parts its a lot part's of Jesus dead but in the Steel Ball Run (Part 7) Jhonny Joestar use those item for awaken his stand to Spin at Tusk Act 4
the 1st item is Hand corpse (use it on standless) for Tusk Act 1
the 2st item is Head corpse use it on Tusk Act 1 for Tusk Act 2
the 3rd item is Torso Corpse Part use on Tusk Act 2 for Tusk Act 3
the 4rd and the final part is Heart corpse use it on Tusk Act 3 for getting Tusk Act 4
