Drop Emergency Elevator Door Key for Dover Thysen Krupp Otis KON Door Elevator Specification:3/8" steel shaft, 1/8 X 3/8" steel drop leg Elevator door release key for elevator repair and rescue. Compatible with gal door opener, commonly Compatible with Dover, Thysen Krupp, OTIS, KONE elevators.For building owner, elevator engineer and emergency service people.Application:Fit for Dover Thysen Krupp Otis KON Door Elevator