Core Bond String Sets


The Core-Bond ™️ activation phase is to submerge the string in our proprietary treatment bath that activates the inner bond cost and bonds the core to the wrap wire. 
The result is longer life, lasting tone, more strength, projection, and output.  Read more...


60 Day Warranty
Strings are subjective, we understand that players have their view of when a string has lost its tone. At Black Diamond Strings, we are so confident in Core-Bond ™️ technology, we offer free replacements within 60 days of purchase for any string you feel tone loss is experienced.  (At this time, replacements are available to USA customers only)

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