This set includes 10 bead threading wires. That's why it's priced at 400 yen. It also comes with a bonus of silicone rubber and instructions. Since this is a trial set, we haven't decided on the exact millimeter width to include yet. I believe there's enough for 2-3 bracelets. Generally, we use the 0.8mm width silicone rubber as a single strand. For 0.4mm and 0.6mm widths, we use two strands. However, the 0.4mm width silicone rubber can easily break with both crystal string and crystal tech. *The operon rubber is purchased in 10m rolls from Hinryo. I do not wind it myself. The bead threading wires are also in a usable condition. Thin wires that can pass through small hole diameters are included. ◆Product Contents Operon rubber 10m x 2, Wires x 10, Instructions ① 10M roll, White, Operon rubber (Crystal string) x 2 ② Wires (cost 10 yen each) x 10 Randomly selected from 0.3mm to 0.38mm. ③ Instructions on how to repair and make bracelets are included. The method is the same whether using double or quadruple strands. Important: Ships via mini letter! (Simple packaging) Bead threading wires can easily get caught and become unusable. Some holes can only be threaded with 0.3mm. It's better to have more. Also, when the number decreases, they are often lost. If not stored in a bag like this, they will disappear quickly. The wires are wrapped in the instructions. Please rest assured. ● This is Hinryo operon rubber. We will include Hinryo's bracelet making instructions. ★About Crystal String Width: 0.8mm For bracelets 100% Polyurethane *We also stream bracelet making tutorials on YouTube, so watching the videos might help you understand better. 100-yen shop operon rubber is quite good, but it can become tight when you tie it firmly when making bracelets. As long as you are mindful of that, it should be fine. Wires are not sold separately, so the 10 wires currently listed are a great deal. Try making your own wonderful original bracelet!^_^