Create a striking light display with these C7 light size retrofit replacement bulbs are slow color changing. They are faceted LED screw-in replacement bulbs designed for traditional incandescent C7 (E12 socket) sockets. They have a 2 inch diameter. Each has five super bright LEDs encapsulated by a hard-to-break lens (unlike the old-fashioned and very fragile incandescent bulbs). Fits directly into existing traditional sockets without extra transformers. Saves a considerable amount of power on electric use, .6 watts. These are great for simple on/off applications. Not recommended for dimming (as in some computer animated displays). Sold in packs of 25 bulbs.