HOME USE bobbin winder make the bobbin winding job easy completed, the bobbin winding machine consists of spindle for thread spool fix; three rods for bobbin storage; thread tension disk for adjusting the winding tightness, and with handle be easy to carry EASY TO OPERATE this bobbin winder machine, just place one spool of thread to the spindle and through the hole on the machine and round it to the tension disk, then draw the thread through the hole one the plastic bobbin and attach the bobbin, the button to winding ATTENTION when you wind the bobbins, make sure only when the thread is correctly between the upper and lower disk of thread tension screw then you can adjust the tightness of thread bobbins, the bobbin stop automatically when the bobbin is full AUTO SHUT-OFF: The auto shut-off feature automatically stops the bobbin winding when the bobbin is full. SEWING TIME-SAVER: Never unthread your sewing machine to wind a bobbin again! This sewing is an external bobbin winder that quickly and easily fills bobbins with thread. The Universal Bobbin Winder is a great sewing and crafting project time saver.