automatic winding, save time and labor, improve work efficiency. (Note: Try to avoid operating under direct sunlight, infrared light may cause the sensor motor to stop) Fits most spools, including M, L, 15 (universal) or any spool with a 1/4 inch (0.64 cm) center hole The bobbin winder is equipped with a start/stop button and indicator light, automatically stops winding when the yarn is full, easy to use Made of metal material, sturdy and , suitable for domestic or industrial sewing machines With metal fixing base plate, easy to install in minutes, can be placed anywhere you want Description: Our automatic bobbin winder is made of metal and is rugged enough to fit most bobbins, including M, L, 15 (universal) or any bobbin with a 1/4 inch (0.64 cm) center hole SAVE TIME: Automatically winds the bobbin, saves time and effort and improves work efficiency. (Note: Avoid operating in direct sunlight, infrared light may cause the sensor motor to stop) EASY TO USE: The bobbin winder is equipped with a start/stop button and indicator light, automatically stops winding when the yarn is full, easy to use Specification: Product Name: Automatic Bobbin Winder Material: Metal Color: As shown Size: Automatic Bobbin Winder (Without Fixing Plate): Length: 16 cm/6.3 in Height: 7.5 cm/3 in Width: 7 cm/2.8 in Fixed Plate Size: 28.5x8.5 cm/11.2x3.3 in Specification: US Standard Style: Style 1 Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the , the Philippines,Taiwan and so on. Voltage: AC110V Package Contents: 1x Automatic Bobbin Winder 1x Bobbin Holder 1x Bobbin Container Holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.