Soul Solid

The Soul Solid is the cane sword that Brook received from the Longarm Tribe during the timeskip.

Appearance
Its appearance is almost identical to his former sword, since they are both shaped like fairly standard cane swords.

Abilities
Not much is known about the quality of this sword itself, though presumably it is of a higher quality than his old one. Brook is able to enhance its power by enveloping the blade with his soul using his Devil Fruit ability. The energy of his soul brings the "very cold of the underworld into this world," resulting in the sword being freezing cold.