#428 Miniature Bulb E10 Base - 12.5 Volt .25 Amp 3.125 Watt G4-1/2 Miniature Screw (E10) Base, 2.40 MSCP, C-2V Filament Design, 250 Average Rated Hours. 1.06"" (26.90mm) Maximum Overall Length (M.O.L.), 0.55"" (14mm) Maximum Outer Diameter (M.O.D.), 0.72"" (18.30mm) Light Center Length (L.C.L.). "

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