Standard size clear acrylic bobbins, ideal to hold your embroidery threads for your project. These are 2mm thick and fit perfectly in our floss organizer - https://joncanfieldcreations.etsy.com/listing/1430828678 Available in sets of 10, 25, 50, 100 or a complete set for DMC threads of 500. Unlike wood, these will not stain your threads. Includes holes for hanging on a ring, and a larger center hole that is perfect as a floss hanger. Also available are a full set of DMC color stickers - made from vinyl, just peel and stick on your bobbins for immediate color reference.