This set includes 10 bead threading wires, which is why it costs 400 yen. It also comes with a free silicone rubber and instructions. This is a trial set, so I haven't decided yet what width beads to include. There should be enough for 2 or 3 bracelets. Generally, 0.8mm wide silicone rubber is used single-strand. 0.4mm and 0.6mm wide silicone rubber are used double-strand, but 0.4mm wide silicone rubber tends to break easily, whether it's crystal thread or Crystal Tech. ※I purchased 10m rolls of Opelet rubber from Hinryo. I did not wind them myself. The bead threading wires are also easy to use. They include thin wires that can pass through small holes. ◆Product Contents 2 x 10m Opelet rubber, 10 wires, instructions ① 2 x 10M roll White Opelet rubber (crystal thread) ② 10 wires (10 yen each) Randomly from 0.3mm to 0.38mm. ③ Instructions on how to repair and make bracelets are included. The method is the same whether you use double or quadruple strands. Important ※Shipped via mini-letter! (Simple packaging) Bead threading wires can get damaged easily. Some holes can only be threaded with 0.3mm wire. It's better to have a lot of them. Also, they are often lost when the number decreases. You need to store them in a bag like this, or they will disappear quickly. The wires are wrapped in the instructions. Please rest assured. ●Hinryo Opelet rubber. I will include Hinryo's bracelet making instructions. ★About Crystal Thread 0.8mm width For bracelets 100% polyurethane ※You might find it easier to understand by watching videos, such as those on YouTube, that show how to make bracelets. The Opelet rubber from 100-yen shops is also quite good, but it can become tight when you tie it tightly to make a bracelet. Just be careful about that. Wires are not sold separately, so the 10 wires currently on sale are a great deal. Please try making your own original and wonderful bracelets!