PIXNOR 25pcs Plastic Empty Sewing Machine Bobbins Spools with Storage Case for Brother Janome Singer Elna Material: Plastic.Color: as the pic shows(5 colors). Size: Approx. 0.78*0.78*0.45inch 2*2*1.15cm. Bobbin Inside Diameter:approx. 0.23inch 0.6cm. Box Size:approx. 4.72*3.93*1.02inch12*10*2.6cm. Durable and practical, helpful tools for home use.