Use the Dritz Sewing Machine Light Bulb in your sewing machine to illuminate your sewing area clearly and complete your project at ease. Designed as a push-in base bulb with bayonet base, this sewing machine accessory is a perfect fit for most machines. You can refer to the machine manual to see if the sewing machine bulb is compatible. Measuring 2-1/8in x 3/4in, this push-in bulb emits 15 watt/120 volts of light.