The cage on our industrial lamp is made from a 3/16” round bar and is welded and shaped to form a protective covering for the bulb. The cage is very heavy duty and cannot be bent with your hands. The cage is then welded onto gas piping and then onto a recycled automotive transmission gear. The lamp is then completed with a flip switch for easy on/off and a twisted cloth chord which completes the style. This lamp is a high-quality product that is completely handcrafted, all metal and no plastic. Expect nothing but the best from Savage Metal. This industrial lamp is great as a bedside lamp, accent table lamp in entryways, reading light, or lighting for kitchen counter areas. Owner operated in the USA.