Interbar 3271 series. Large plastic push switch with heavy "snap-action" response. Requires two or three Lbs of pressure to actuate. Possibly designed for foot-switch application. S.P.S.T., Push-on/push-off. Rated 11A 120 Vac. Plunger is 0.58" x 0.65". Body is 1.18" x 1.25" x 0.92" high. 0.187" qc/ solder terminals. Two mounting holes for self-threading screws on 0.92" centers. UL, CSA.