The Fender Flat Wound 9050 Stainless Steel 9050s are an excellent choice for Jazz, Country, R&B and Reggae. The first electric basses were made by Fender and these bass were supplied with flat wound strings. Nowadays, many players use flat wound stainless steel 90s to give their tone palette a different character. From smoky jazz clubs to R & B locations, from reggae parties to country music halls, the 9050s give you a longer lifespan.