4 Size Spool: 4 different size empty spools: 27x16mm/1.06x0.62", 48x31mm/1.88x1.22", 14x10m/0.55x0.39", 40x20mm/1.57x0.78", the center of these wooden spools are punched, you may use to fix the spool. Package Include: 4 size, each size has 10pcs empty thread spools, total 40pcs spools, mixed size and enough quantity can be satisfied with your daily use demand, further embellished for decorative purposes or decorated for other DIY work. Wooden Spools: Made of schima wood, these empty spools are strong and durable, eco-friendly, not easy to break or deform, thick enough to stand both manual and machine application, can be used for a long time. Smoth Surface: Adopt advanced technology, the surface of these empty spools are well polished, will not damage your wire, easy and comfortable to use. You can focus on your wood creation, not picking splinters out of your hands! Wide Usage: Great for encircling of thin and short strings, wires, decoration chains, twine, bobbin, cord. It makes your strings and chains not too messy and can save some room for your home and office.