These are five Lost Arrow pitons made by Black Diamond. In the second photo, they are numbered from left to right as #1, 2, 3, 4, and 5 (this is not the size). They have red markings, and #1, 2, and 5 are unused. They have never been placed. They can be sold individually. In that case, the shipping cost is ¥215. New #1, 2, and 5 are ¥2,400 each. #3 and 4 are ¥2,200 each, plus ¥215 shipping. They will be sold individually at the above prices. Regarding Lost Arrows, although I didn't use them very often, when they held, I felt lighter and more confident (but it's better not to fall in the mountains). Bugaboos and angles often bend and have a low reuse rate, but I think Lost Arrows can be used almost permanently (they have incredible strength).