Sawtooth Ring

Invented for questionable purposes and usually sold behind closed doors to questionable people, the sawtooth ring is nonetheless a remarkable device. Though it appears to be a normal ring, the two halves of a sawtooth ring can be pulled apart to reveal a band of sharpened teeth wound tightly inside. Captured rogues often use a sawtooth ring to cut their way free of bonds, but the rings also have the potential for use as a melee weapon.