Satco Adjustable Medium Base Socket with Switch an adjustable design combined with a convenient switch, making it easy to control your lighting. This socket features an inside extrusion that allows for simple height adjustment, accommodating various bulb lengths and fixture designs. You can customize the socket to achieve the lighting effect and ensure optimal performance. Additionally, the included paper liner provides insulation and protection, enhancing safety during use by preventing electrical contact and ensuring reliable, secure operation. Model Number: 90/424