Four sets of custom gauge nickel wound electric guitar strings, 9.5-44. One set is unopened. The remaining three are from a 3-set pack that has been opened (contents are unopened and unused). Counterfeit products are prevalent, but are these genuine? *Please check the images for details such as the fine serrations on the top and bottom cuts of the package. I changed the gauge I usually use to 10-46, so these are surplus stock from my home. They've been in storage for about a year. - Brand: Ernie Ball - Model: Primo Slinky - Gauge: Custom Gauge 95-44 - Material: Nickel Wound - Country of Manufacture: Made in USA Thank you for looking.