D'Addario EXL145 electric guitar strings are nickel wound, heavy gauge strings that offer excellent sound quality and durability. Unused, in the old packaging. Everything in the photos is included. The bag has not been opened. - Brand: D'Addario - Model: EXL145 - Gauge: Heavy Gauge .012 - .054 - String Type: Nickel Wound Round Wound - Tension: 1E: 10.57 lb, 2B: 10.52 lb, 3G: 8.66 lb, 4D: 7.47 lb, 5A: 6.54 lb, 6E: 5.70 lb - Ball End Color Code: 1E: Silver, 2B: Purple, 3G: Green, 4D: Black, 5A: Red, 6E: Brass I do not smoke. I do not have any pets. Thank you for looking.