Thank you for viewing. This is unidirectional carbon fiber (carbon cloth). The winding length is 7.3kg, measured by subtracting the weight of the core, and calculated at 100g per meter, resulting in 73m. The 2.7m and 1.4m pieces at the ends of the image are also included as a bonus. The width is 50cm. How about for seismic reinforcement of house foundations or ship repairs? Everything in the images is included. Due to my busy schedule and frequent business trips, transactions may take some time. Please purchase with some leeway. Receipts cannot be issued. Immediate purchase is available, and discounts are not possible. It is also listed on Yahoo Auctions, and I am also reaching out elsewhere, so it may end without notice. Please understand. Shipping to remote islands is not possible. Please feel free to comment if you have any questions. Thank you for your consideration.