Mark Bass Longevo PhBronze 011-052 Acoustic guitar string set

Mark Bass Longevo PhBronze 012-053 Acoustic guitar string set

Mark Bass Twinkle Phosphor Bronze 011-052 Acoustic guitar string set

Mark Bass Longevo Bright 80/20 Bronze 011-052 Acoustic guitar string set

Mark Bass Bright 80/20 Bronze 012-056 Acoustic guitar string set

Mark Bass Bright 80/20 Bronze 011-052 Acoustic guitar string set

Mark Bass Twinkle Phosphor Bronze 012-053 Acoustic guitar string set