A man's penis is shown. It is a prosthetic and the scene is not of a sexual matter, but there are many closeups.

A person uses a drill on someone - into their head and their body.

A person gets a key stabbed into their eye. Blood and key protrusion can be seen.

A person gets decapitated by an axe.

A person gets a knife under the chin that goes up into their head.

A person's head/face is bashed in by a tripod. The aftermath is shown in detail.

A person's throat is slashed with a knife.

A person is violently strangled with a cord.

A person is doused in flammable liquid and set on fire.

Probably the main reason for the NC-17 Rating, a man gets his penis sawed off. The before and after are shown in close-up.