Portable Bobbin Winder for Sewing Machines, Electric Automatic Bobbin Winder, Household Industrial Sewing Winding Tool WINDEREasy to install and maintain, the automatic bobbin winder with screws and the bobbin thread stand and base plate can be mounted on a table, or you can place the electric bobbin winder automatic portable wherever you need it.BOBBIN WINDER MACHINEHigh speed, this bobbin winder machine saves a lot of time when you need to finish a big project quickly.BOBBIN WINDER MACHINEThe bobbin winder electric bobbin case supports USB power supply and battery, on/off button and indicator lights make it easy to use, automatically shuts off when the bobbin is full.SEWING MACHINE BOBBINSSuitable for all coils, including type M, type L, type 15 (universal) or any coil with a 1/4 inch (0.64 cm) center hole. Most of the coils correspond to the default position. If your bobbin does not fit or the bobbin winder is not evenly on the bobbin during use, please try to adjust the position of the sensors.AUTO WINDERAutomatic bobbin winder for household sewing machines bobbin and industrial, durable and practical, convenient for your sewing works.Specification:Item Type: Bobbin WinderProduct Material: Plastic, Stainless SteelProduct Specification: 1 pieceProduct use: householdApplicable scenarios: most scenariosBattery: 2 x AA batteries (battery not included)Product size: approx. 8.5 x 13.7 x 9.3cm / 3.3 x 5.4 x 3.7inPackage list:1 electric winder Note: the data are all manual measurement, please allow 1-3cm error, due to the light and display difference, there will be some color difference, depending on the physical object received.