Ernie Ball 2834 Super Slinky bass strings are roundwound for maximum clarity and serious punch. The list of endorsers for Ernie Ball Slinky bass strings reads like a who"s who of modern rock bass. Made in the USA. Ernie Ball is the pioneer of rock and roll guitar strings. Jimmy Page, Eric Clapton, Steve Vai, and Slash are among the long list of Slinky players. Gauges 45-65-80-100.