Eiko 41 Bulb | 0.5 Amp, 2.5 Volt, 1.25 Watts, T3.25, E10 Base

This incandescent bulb with ANSI code 41 uses 0.5 amps, 2.5 volts, and 1.25 watts. It has a T3.25 lamp shape, and E10 miniature screw base. The 41 bulb has an average rated life of 3000 hours.