Usage Tips:Features: 1.Made of material: More durable and serve longer. 2.Multi-function sewing machine light bulb: E14 small lamp head 3 bead LED bulb. 3.Suitable for all multi-purpose household sewing machines with E14 screw. 4.LED lighting: white light, no heat, low power consumption, and much longer life than ordinary incandescent bulbs. 5.The bulb interface BA15D bayonet: no thread, suitable for old machine, the interface length is 20 mm. specification: Made of material: More durable and serve longer. Multi-function sewing machine light bulb: E14 small lamp head 3 bead LED bulb. Suitable for all multi-purpose household sewing machines with E14 screw. LED lighting: white light, no heat, low power consumption, and much longer life than ordinary incandescent bulbs. The bulb interface BA15D bayonet: no thread, suitable for old machine, the interface length is 20 mm. : Product Name: Home multi-function sewing machine lighting bulb Material: plastic Type: E14 Screw / Bayonet (Optional) Package List: Light bulb * 1 Note: The bulb is a small lamp head with a screw diameter of about 14 mm/0.6 inch.