Item Type: Bobbin Thread Set Material: Polyester, Plastic Color: Assorted Color Single Roll Size: Approx. 20 x 10mm / 0.8 x 0.4in ( Manual Measurement, Slight Error May Exist ) Package List 36 x Roll of Prewound Bobbin Thread 1 x Plastic Box 1Bobbin with Thread: This bobbin thread set comes with 36Pcs bobbins and 36 assorted colors sewing threads, enough for your normal daily using. 2Durable Plastic: These colorful bobbins are made from durable plastic material, and threads adopt premium polyester. 3Wide Application: These plastic bobbins and polyester threads are essential accessories for your sewing machine for handcraft and patch the clothes. 4Box Packed: These prewound bobbins threads are well organized in a transparent plastic box, easy to see which color to choose and let your hand sewing in an orderly way. 5Great Gift: This swing bobbins set is the great choice for you preparing gifts for your wife, mom, sister or friends.