3-WAY LIGHT BULB 30/60/100 WATT INCANDESCENT THREE WAY BULB LONG LIFE A21 10,000 HOURS Long Life Three-Way Light Bulb 10,000 Hours Medium Base, 30-60-100 Watts, 130 Volt Lasts up to 6 years in normal household use Frosted glass, brass base, rugged rough service filaments 5.313" Maximum Overall Length