These C9 size retrofit replacement bulbs are red in color. They are specially made to be dimmable. They are commercial grade, faceted LED screw-in replacement bulbs designed for traditional incandescent C9 (E17 socket) sockets. They have a 2-1/4"" cone. Each has five super bright LEDs encapsulated by a hard-to-break lens (unlike the old-fashioned and very fragile incandescent bulbs). Each bulb consumes 1 watt of power so you can safely connect up to 1,125 bulbs 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. Can also be used in non-dimming (simple on/off) applications. Sold in packs of 25 bulbs. Great for Christmas and Valentine's Day too.