circuit breaker (743-506-006) by AMF bowling products. comes in a sealed AMF bag complete with lock washer, lock nut and printed "push to reset" bezel. Download comprehensive AMF Bowling parts catalogue & schematics: Status: NOS (New Old Stock) ex USAF 2016 retail $19.63 Please note these are in the UK, so probably not viable to ship back to the States, but, hey... if you are in the UK then you save shipping in ! RoHS: tbc