Any person in this state who commercially manufactures or causes to be commercially manufactured, or who knowingly imports into the state for commercial sale, keeps for commercial sale, or offers or exposes for commercial sale, any hard plastic knuckles or hard wooden knuckles is guilty of a misdemeanor. As used in this section, hard plastic knuckles or hard wooden knuckles means any device or instrument made wholly or partially of plastic or of wood, composite, or paper materials that is not a metal knuckle as defined in paragraph (7) of subdivision (c) of Section 12020, that is worn for purposes of offense or defense in or on the hand, and that either protects the wearer`s hand while striking a blow or increases the force of impact from the blow or injury to the individual receiving the blow. The plastic, wood, composite or paper products contained in the device may help support the hand or fist, provide a shield to protect it, or consist of projections or studs that would contact the individual receiving a blow.
