Christmas lights have never been so bright and vibrant. These C7-size retrofit replacement bulbs are purple. They are specially made to be dimmable. They are commercial grade, twinkle, LED screw-in replacement bulbs designed for traditional incandescent C7 (E12 socket) sockets. They have a 1-1/2" cone. Each has one super bright LED encapsulated by a hard-to-break lens (unlike the old-fashioned and very fragile incandescent bulbs). Each bulb consumes .58 watts of power on one 15-amp circuit. Fits directly into existing traditional sockets without extra transformers. Saves up to 90% on electric use. Recommended for computer-animated displays requiring dimming. Sold in packs of 25 bulbs.