Fernandes ZO-3 exclusive strings GSZ-500, brand new and unopened. These are exclusive electric guitar strings developed specifically for the scale and tension of the Fernandes ZO-3. Please note that they cannot be used on guitars or basses with different scales. Electric Guitar Strings .010 .013 .017 .026 .036 .046 These are discontinued and have become difficult to obtain recently. I had them in stock, but no longer need them as I've sold my ZO-3. For those who need them, please take them. Please refrain from price negotiations. If paying at a convenience store/ATM, please inform me of your expected payment date after purchase.