Go to Tusk Act parts for more information.
About and Info
Tusk is the stand of the Corpse Parts, wielded by Johnny Joestar, which allows him to fire his nails. (You can't fire nail bullets/shots in the game excepting when using Tusk Act 4, its final act.)
E - Tusk will punch using its tiny arm, dealing no damage.
Tusk act 1 looks like a pink neotenous alien creature which features yellow stars on its body.
How to Obtain
Hand corpse + Standless = Tusk
Bugs and Trivia
This stand has no working offensive moves, using E will bug your player, making you unable to jump, roll, and unsummon tusk. This can be fixed by dying or resetting.