The 15W Red BC Bayonet Pygmy Incandescent Bulb is a single glass bulb with a red light colour, specifically designed for indoor use. It features a pygmy bulb shape with a bayonet connector, making it easy to install in various lighting fixtures. This coloured light bulb from the Bulb product line offers a warm and cosy lighting experience, perfect for adding a touch of ambiance to any room in your home. Made in the United Kingdom, this incandescent bulb provides a classic and reliable lighting solution for your space.