Easy to install: The Ba15d 220V bayonet LED bulb (2 contacts) is solderless, safe and easy to use. Please check that the bulb size (Ø16 x 43 mm) is compatible with your sewing machine before purchasing. 【Durable quality】The ceramic shell + polycarbonate, it has good heat dissipation, safety protection and durability. The average lifespan is 25,000 hours. The glass material provides good light transmission. Energy saving: B15 3W LED sewing machine bulb 320 lm soft light with 360 degree beam angle. It is perfect to replace the Ba15d 15W-30W incandescent bulb. Reduces energy consumption by over 90% Widely used: The B15d standard is ideal for sewing machine, bedside lamp, range hood light, overhead extractor, picture lights, emergency lighting, appliance light, laundry room, and decorative lighting Eco-friendly: This small Ba15d bayonet LED bulb is not compatible with dimmers. Lead and mercury free. Instant on without glare, no flicker to protect your eyes