Twill weave full carbon fiber 12.7mm thick, 3mm wall, two-piece harpoon spear, 300cm + extension piece. I bought it new on Yahoo Auctions in 2017. It's made by Tesuri Honpo. I've used it about 10 times. I don't think I'll be diving much anymore, so I'm selling it. The original listing page is gone, so the detailed materials are unknown, but I think it's about the same as the current ones. (I only have the title from the listing...) The size is 2 pieces of 130cm x 2 + an intermediate piece of about 70cm. (Images 15-18) The items for sale are those shown in the first and second images (and the bag). The rubber has deteriorated and broken, so it's not included. There are many small holes in the bag because the harpoon was stored in it. The harpoon system rubber has also deteriorated, so it's better to replace it. There are scratches and signs of use to a certain extent. I've customized it with Suberazu (anti-slip material) to prevent slipping.