Usage Tips:Black Empty Spools: package includes 20pcs black plastic empty spools, about 5.5cm/2.1 inch in diameter, 2cm/0.7 inch thick, inner diameter 2.5cm/1 inch, 28cm/1.1 inch. Provide endless fun and Quality Material: the ribbon spools are made of quality plastic, the without burrs, sturdy and , not cause cracks when drilling holes, thick enough to stand both manual and machine application Perfect Design: the plastic spools are in elegant hourglass design, the threads are easier to wrap and easier to distinguish, and the shaft hole of each spool is centered, there be no deviation during use, to unleash your creativity Easy to Use: hold of the thread against the flat part and start wrapping it around the center, and the bobbin holds them to the strand, helps you save up space for wires, cords or ribbons, and helps you complete the handmade project efficiently Wide Applications: the empty plastic spools are perfect for organizing thread, wire, twine, cord, bobbin, chains, ribbon and and many other items. Also perfect for DIY arts and crafts making and photo prop. Just unleash your creativity in textile wire weaving and DIY art projects Colour:black Material:plastic Package Contents: 20 * Empty Spools Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.