A common replacement strobe tube for Star/SVP Beacons. 129 (Standard) Works in models: 200A,200AD,200AQ,200ADH,200AQH 200B,200BD,200DQ,200BDH,200BQH 200C,200CD,200CF,200CFD,200CFQ,200CQ 200E 200S,200SD,200SQ 240C,240CD,240CF,240CFD,240CQ 240S,240SD,240SF,240SFD,240SQ 242CFQ,242CFL,242SF,242SFL 250AH, 250CH,250SH