O'Dwyer's Intubation Set in a stainless steel case. Set consists of the following instruments: 7 hard rubber black tubes; these fit over 7 long obdurators of varying sizes, including an introducer with a long stainless steel handle and shaft with a spring mechanism attached to the end, an extractor with a long stainless steel handle and curved shaft with forcep-like action. Both long instruments have fluted, square handles. Missing the mouth gag. Plate on the inside that holds in the obdurators has a scale on it, 1 to 12. Also has a patent date: PAT July 12 1892, Pat. Pending. The largest hard rubber tube is cracked.