What is a type b light bulb. The bulbs are used for. The a series light bulb is the classic glass light bulb shape that has been the most commonly used type for general lighting service gls applications since the early 20th century. Bright and colorful these holiday lights will add cheer to any room without adding to your energy bill. An incandescent light bulb incandescent lamp or incandescent light globe is an electric light with a wire filament heated to such a high temperature that it glows with visible light incandescence.
So easy to crochet you can deck all your halls.