The Slinkys Ernie Ball Baritone are curved for maximum clarity and a powerful punch. These sets are optimal for AA or BB chord combinations and harmonize perfectly with hybrid baritone instruments. The strings have small ball ends like guitar strings, not the large ball ends used on bass ensembles. The list of people who support the Ernie Ball Slinky bass strings reads like one of the best artists out there today. Ratings .013 .018p .030 .044 .056 .072