This is a convenient set of bamboo circular knitting needles in various sizes. - Brand: addi - Set Contents: Circular needle set - Number of Needles: 16 - Needle Material: Bamboo - Needle Sizes: Various (sizes are indicated) - Case Color: Green - Accessories: Attachments, cables I purchased this and stored it away without using it. Upon inspection for this listing, I noticed some roughness on the metal parts, likely due to moisture affecting the bamboo. I cleaned it. The metal parts have some discoloration, but the roughness is gone, and there are no snags. I believe it can be used without any problems. You can start knitting smoothly by simply inserting the cable and turning it with a click. The cable lengths are 60cm, 80cm, and 100cm. These are sold on Amazon and other sites for between 20,000 and 40,000 yen. Although unused, I have cleaned it, so I hope you understand that this is a "like new" item. I look forward to your purchase.