Alice 1 Set Acoustic Bass (4-String) Strings .040-0.095 Guitar String Set Fit for regular size of the acoustic bass greatly. The guitar strings are is in Steel Core with Coated Copper Alloy Wound. G string -1st Coated Copper Alloy Wound .040" 1.02mm; D string -2nd Coated Copper Alloy Wound .060" 1.52mm; A string -3rd Coated Copper Alloy Wound .075" 1.91mm; E string -4th Coated Copper Alloy Wound .095" 2.41mm. The string is packaged in the plastic bag as photo shown. Package including: 1 set electric bass strings.