Replacement sewing‑machine bulb with a 1.5 cm screw‑in base for models that accept a threaded socket. Bright, focused light improves visibility at the needle area during stitching and detail work. Suitable for many domestic machines; always verify your machine’s bulb type and voltage before installing. A practical spare to keep on hand for workshops and classrooms. Follow the package directions and test on a scrap to confirm compatibility.