Leviton White Porcelain Incandescent Lampholder with Pull Chain is a durable and reliable lighting accessory designed to hold incandescent bulbs with a medium-sized base. Crafted from white porcelain, this one-piece lampholder features a removable interior that allows for easy wiring without the need to remove the entire unit. It includes two screw terminals and has a 4-1/2 inch outside diameter with knockouts that fit 3-1/4 inch or 4-inch outlet boxes. For added convenience, it comes with captive mounting screws and a short pull chain attached to a 3-foot braided cord with a belled end, making it simple to operate. Model Number: 011-29816-00C