Ernie Ball 2833 Hybrid Slinky Round Wound Bass Strings offer maximum clarity and serious punch With a combination of Super Slinky and Regular Slinky gauges, the Hybrid Slinky set has proven to be a popular staple for musicians worldwide Each bass string is manufactured with the finest and freshest raw materials in the beautiful Coachella Valley of Southern California Gauges 45-65-85-105 Well balanced Ball ends are made using brass wire rod Nickel Wound Slinky bass strings are precision wound with nickel plated steel wire High carbon steel hex core- provides excellent durability