RONIS key-operated switch, 22 mm, round, metal, shiny, lock number SB30, with 2 keys, 2 switch positions O<I, momentary contact type, Actuating angle 45°, 10:30h/12h, key removal O, possible special locks: SB31, 421, 455, with laser labeling, upper case and lower case, always upper case at beginning of line