Package Includes--You will receive 50pcs clear house shaped acrylic embroidery thread organizer bobbins and 1pc iron clip ring, the quantity is enough for your hand embroidery thread storage needs. Size Information--The acrylic bobbin measure about 39.5x39.5x2.8mm/1.6x1.6x0.1 inch and the binder hinge ring measures about 69x3mm/2.7x0.1 inch with an inner diameter of 63mm/2.5 inch.Medium size for your convenience. Practical Design--Acrylic bobbins are designed with hanging holes at the top, which can be neatly arranged on the hinge ring of the binder, you can also place the embroidery thread number on the cutout in the middle of the bobbins, convenient for storage and easy to use. Quality Material--These cross stitch bobbins are made of high quality acrylic material and the hinge ring is made of iron material, strong and durable, not easy to break or deform, light weight, easy to carry and store. Wide Application--Acrylic bobbins are perfect for cross stitch, needlework, embroidery, DIY crafts or other sewing projects. They help you keep threads, strings and bands handy and prevent all kinds of thread messes.