内六角扳手 Traditional form: 內六角扳手 Pinyin (reading): nèiliùjiǎobānshǒu Definitions: Allen key hex key Characters: 内 - inside 六 - six 角 - angle, corner; horn, horn-shaped 扳 - to drag, to pull; to twist 手 - hand Traditional characters: 內 - inside 六 - six 角 - angle, corner; horn, horn-shaped 扳 - to drag, to pull; to twist 手 - hand