Package Include: Come with 20pcs craft spool 56mm in height 61mm in backplane diameter 13mm in the hole enought to encircle strings the center of these spools are punched you may use it to fix. Material: Made of premium and durable plastic it is lightweight and not easy to break can be used over and over again. Each plastic empty spool has large tops and bottoms especially suitable bobbins for yarn to make crafts. Empty Wire Spool: The surface of these empty spools are well polished will not damage your wire. the compact size of these spools allows for easy storage helping you keep your crafting area neat and organized Easy to Use: Hold end of the thread against the flat part then begin to wrap around the middle. You can even pre-string beads onto the thread and this bobbin will hold them on the strand. Wide Application: It is very suitable for encircling all kinds of wires chains threads hemp threads shuttle cores wires elastic wires decorative chains etc. This will make your strings and chains not too messy.