Size of Floss Bobbin: 1.5inch in length and 1.4inch in width; Size of Floss Winder: 3.5inch This floss bobbin winder is hand crank operation, easy and fast to accelerating winding thread. Plastic floss bobbins made of and practical transparent PP plastics, flat shape with smooth finish. Package included 500 PCS of bobbins and 1 Pack of floss winder. Widely use embroidery bobbins can help you organize and untie the remaining thread, keeping remaining thread, skein, washi tape organized, untangled., Weight: 1.08908357428 Pounds, Manufacturer: puhae