This is a set of solo tuning steel strings for a French-made Savarez wood bass. These strings are quite soft for steel strings, and their thinness is about half that of Spirocore strings. Using them in standard tuning lowers the tension, making them even softer to play. Brand new, unused. I am selling these because I use strings from another manufacturer. I am selling this on behalf of a family member. I am not very familiar with this product, so I will answer questions to the best of my ability. Please feel free to ask any questions you may have.