Cocoon bobbins are used on schiffli embroidery & multi-needle lockstitch quilting machines equiped with shuttles. Made of cotton, poly/poly core spun, spun polyester, continuous filament nylon 6.6 and Polyester ,Textured Polyester Yarn and other specialty products such as aramid threads. We offer a wide range of sizes and colours for various applications: Spun Polyester: Ne40s/2 , 50s/2 ,60/2, 70/2, 80/2 ,Natural,white and Colors Continuous Polyester: 50D/2, 70D/2, 70D/3, 100D/2â?¦. Textured Polyester : 150D/1, 150D/2 .. Poly Poly & Cotton Poly Core Spun: Ne40/2, 45/2,50/2, 70/2 Size: #6, #7, #9, #10