Mostly there is bobbin winder built-in the sewing machine it self, but lower speed, and Singer Juki Janome Brother elna kenmore bobbin winder have problems, not working. So you need Axis Automatic bobbin winder for sewing machine bobbin winder. Portable bobbin winder is with thread spool pin, thread guide rods, metal plate. High speed, this bobbin winder machine saves a lot of time when you need to get a big project completed quickly. Runs on standard AC power (110 Volt). Start/stop button and light indicators as well as automatic shut off when bobbin is full. Automatic bobbin winder for domestic and industrial sewing machines bobbin. But it cannot work with Pfaff plastic bobbin.