Acoustic guitar strings by Martin. Strings for acoustic guitars. Martin makes them. For guitars. Acoustic guitars. Strings. By Martin. Get the picture? Martin SP+3100 Coated 80/20 Bronze Light (12-54) $12.74 Martin SP+4100 Coated Phosphor Bronze Light (12-54) $12.74 Martin Marquis 2100 Phosphor Bronze Light (12-54) $7.15 Martin SP Marquis 2200 Phosphor Bronze Medium (13-56) $7.15 Martin SP3000 80/20 Bronze Extra Light (10-47) $5.60 Martin SP3050 80/20 Bronze Custom Light (11-52) $5.60 Martin SP3100 80/20 Bronze Light (12-54) $5.60 Martin SP31FS 80/20 Bronze FingerStyle Light (12-54) $5.81 Martin SP3200 80/20 Bronze Medium (13-56) $5.60 Martin SP32FS 80/20 Bronze FingerStyle Medium (13-56) $5.81 Martin SP4000 Phosphor Bronze Extra Light (10-47) $6.16 Martin SP4050 Phosphor Bronze Custom Light (11-52) $6.16 Martin SP4100 Phosphor Bronze Light (12-54) $6.16 Martin SP41FS Phosphor Bronze FingerStyle Light (12-54) $6.39 Martin SP4200 Phosphor Bronze Medium (13-56) $6.16 Martin SP42FS Phosphor Bronze FingerStyle Medium (13-56) $6.39 Martin SP4250 Phosphor Bronze Bluegrass (13-56) $6.16 Martin Marquis 1000 80/20 Bronze Extra Light (10-47) $4.93 Martin Marquis 1100 80/20 Bronze Light (12-54) $4.93 Martin Marquis 1200 80/20 Bronze Medium (13-56) $4.93 Martin Marquis 2100 Phosphor Bronze Light (12-54) $5.27 Martin Marquis 2200 Phosphor Bronze Medium (13-56) $5.27 Martin M540 Phosphor Bronze Light (12-54) $4.61 Martin M550 Phosphor Bronze Medium (13-56) $4.61 Martin M170 80/20 Bronze Extra Light (10-47) $4.16 Martin M175 80/20 Bronze Custom Light (11-52) $4.16 Martin M140 80/20 Bronze Light Strings (12-54) $4.16 Martin M240 80/20 Bronze Bluegrass Strings (12-56) $4.16 Martin M150 80/20 Bronze Medium Strings (13-56) $4.16 Martin 130 Folk Guitar Silk & Steel (11.5-47) $5.99