Large Wheel Bobbin Winder 259431 75mm Diameter Drive wheel. Please ensure that you replace Bobbin Winder like for like. The 75mm Large wheel spool winder usually is used when the sewing machine used a large capacity spool. The large bobbin winder wheel is 75mm in diameter. The small bobbin winder wheel is 60mm in diameter. If you have a belt guard on your machine these bobbin winders are not interchangeable.
