"Modoran Karakui" is an innovative product designed to simplify the tuning of the sanshin, which can be difficult for beginners. Once installed, you can tune the instrument with one hand, and the strings won't unwind. Urumaya, a sanshin shop in Okinawa, has been offering an installation service for this product to its customers. Now, they are selling it as a DIY kit, allowing you to install it yourself. The kit includes three "Modoran Karakui," several pre-installed parts, and an installation manual. No tools are required, and the work isn't particularly difficult. However, since you'll be attaching small parts, it's not recommended for those who are not comfortable with DIY or crafts. Thank you for your understanding. (Contents) Each set includes: ・Modoran Karakui (3) ・Washers (3) ・Springs (3) ・Nuts (3) ・Instruction Manual (Items to prepare) None in particular. A small amount of wood glue is recommended.