Last up to 3X longer - Amazing Tone - Effortless Feel - High Output - Great Sustain
Cryogenically treated to enhance tone and feel while creating a longer lasting and more durable string. The cryogenic process removes transient material that produces harsh highs and muddy lows that kill the sound and life of your string. Made of 8% nickel-plated steel outer wrap on tinned Mandolin wire hex-core, Blue Steel strings have been best sellers worldwide for over 30 years and are used by the best musicians everywhere. Once you try Blue Steel strings you’ll be hooked. They feel great, ring true, are durable and long-lasting with harmonics you won't find in any other string. 

Gauges

E B G D A E
2550 XL .008 .011 .014 .022 .030 .038
2552 LT .009 .011 .016 .024 .032 .042
2554 CL .009 .011 .016 .026 .036 .046
2556 REG .010 .013 .017 .026 .036 .046
2558 LTHB .010 .013 .017 .030 .042 .052
2562 MED .011 .013 .018 .030 .042 .052
2555 JZ .012 .015 .026 .034 .044 .054
2557 DT .013 .016 .026 .036 .046 .056

 

7 String
E B G D A E B
2552A LT .009 .011 .016 .024 .032 .042 .054
2554A CL .009 .011 .016 .026 .036 .046 .056
2556A REG .010 .013 .017 .026 .036 .046 .056
2558A LTHB .010 .013 .017 .030 .042 .052 .060
2562A MED .011 .013 .018P/.020W .030 .042 .052 .060