Silk is smooth, sensual, seductive — and awfully darned practical, at least when it comes to protecting your guitar.
Martin wraps the ball ends of its MA540S Marquis 92/8 Phosphor Bronze acoustic strings with soft silk. This helps protect your guitar's bridge and end plate as you play.
These light gauge strings are made with tin-plated steel core wire and Phosphor Bronze wrap wire.
| Note | Gauge (in.) | Material |
| E/1st | .012 | Plain steel |
| B/2nd | .016 | Plain steel |
| G/3rd | .025 | Phosphor bronze |
| D/4th | .032 | Phosphor bronze |
| A/5th | .042 | Phosphor bronze |
| E/6th | .054 | Phosphor bronze |
