LIGHT BULB Frosted - For home sewing machines, Viking, Pfaff, Kenmore, Singer 758 770 775 778 900 1000 Futura 1022 1482 1485 1486 + This is a New Universal Frosted Sewing Machine Light Bulb # 4PCW-F (120 Volts, 15 Watts, Push-in Turn & Lock, 9/16" Base). 120 Volts, 15 Watts, Push-in Turn & Lock, 9/16" Base). Please check and make sure which type your bulbs socket takes either the push-in or screw-in type bulb. The reason for this is that some makes and models were made with both types of sockets. FITS MOST HOME SEWING MACHINES