Section 17350 Of Division 2. Definitions From California Penal Code >> Division 2. >> Title 1. >> Part 6.

. As used in this part, "writing pen knife" means a device that appears to be a writing pen but has concealed within it a pointed, metallic shaft that is designed to be a stabbing instrument which is exposed by mechanical action or gravity which locks into place when extended or the pointed, metallic shaft is exposed by the removal of the cap or cover on the device.