Find the lowest price for:       All ProductsAcoustic Guitar Strings     0.0 (0)   Add a review Martin FX640 Light 80/20 Bronze Acoustic Guitar Strings   Martin FX640 light acoustic guitar strings use a thinner core wire to deliver greater player control with sharp attack, increased flexibility and improved harmonic sustain. Martin FX strings have a wrap that is constructed of 80/20 bronze and the ... Have a question? Ask the Experts! Set Price Alert Compare Prices Product Spec Member Reviews Recommend to Friends Searched Martin FX640 Light 80/20 Bronze Acoustic Guitar Strings in 150 stores, 5 results found Note: The most expensive offers towards the end of the page are often for multiple packs. Image Description   Store   Price Martin Strings FX Flexible Core Light 12-52 MFX640 If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $4.79 Go to Store Martin FX640 Light 80/20 Bronze Acoustic Guitar Strings If this item doesn't belong here, click Remove and help us keep our results accurate.   Musicians Friend   5 Store Reviews   $4.79 Go to Store Martin FX640 80/20 Acoustic Guitar Strings If this item doesn't belong here, click Remove and help us keep our results accurate.   samedaymusic   1 Store Reviews   $4.9 Go to Store Martin FX 80/20 Bronze Acoustic Guitar Strings Light If this item doesn't belong here, click Remove and help us keep our results accurate.   American Musical   1 Store Reviews   $4.95 Go to Store Martin FX640 80/20 Acoustic Guitar Strings If this item doesn't belong here, click Remove and help us keep our results accurate.   zZounds   1 Store Reviews   $4.95 Go to Store Are we missing a store? Let us know! Something wrong in this page? Let us know! Related products: More 6 String Sets .012 Gauge Acoustic Guitar Strings Other Acoustic Guitar Strings internal use: spec115 spec141 spec602