Rough Service incandescent light bulbs have an unprecedented 20,000-hour rated life – that’s up to 28 times longer than the life of a standard incandescent light bulb! Rough Service light bulbs boast a durable seven-support filament mounting, triple alloy tungsten filament, brass base to prevent corrosion, and three separate getters.... read more

Rough Service incandescent light bulbs have an unprecedented 20,000-hour rated life – that’s up to 28 times longer than the life of a standard incandescent light bulb! Rough Service light bulbs boast a durable seven-support filament mounting, triple alloy tungsten filament, brass base to prevent corrosion, and three separate getters.