This is a brand new very useful winder machine. 

this listing only include the bobbin winder, if you need full set with the thread hold and stand, please buy from https://www.ebay.com/itm/143603134346

Runs on AC power so you are sure to get constant tension. No need to worry about batteries going dead as with many of the cheaper hand held winders.

Made from industrial strength parts and will last very long time.

Automatically turns off when bobbin is full.

On/Off Switch Thread tension adjustment,Thread cutter

Perfect for the person that does a lot of sewing.

Fits Most Type M, Type L, Type 15 (Universal) bobbins with 1/4 inch (6mm ) center hole, If the hole diameter of either side is less than 6mm or much more than 6mm, (like some pfaff and viking bobbins), this bobbin winder will not suitable.