D'Addario Guitar Strings - Set of 4! This is a set of popular models: EHR350, ECG25, and ECG24. All are new, unused, and unopened. Please note that there may be some scratches or imperfections on the packaging. The outer packaging of ECG24 is open, but this is due to natural adhesive peeling. The inner plastic packaging that seals the strings is unopened and unused, so please rest assured. EHR350 (Half Rounds 12-52): A balance between round and flat. Moderately bright and smooth. https://www.soundhouse.co.jp/products/detail/item/26532/?srsltid=AfmBOop8flqtMnEJRaLyekYnD-kOip_6DdGZBRMBMOS57i3jZ27YEI62 ECG25 (Chromes Flat Wound 12-52): Warm and smooth jazz tone. https://www.soundhouse.co.jp/products/detail/item/26512/?srsltid=AfmBOopPEdPxNjbdn3vHUXA2rC8y8tlBTBu5fODtSxYcZTjQ_MV1d1ve ECG24 (Chromes Flat Wound 11-50): Easy to play with a lighter tension, soft tone. https://www.soundhouse.co.jp/products/detail/item/26508/?srsltid=AfmBOooXyu5OWO-cjnNKN4_cRqfQQg-PQFVSWsmzociQUl658_m9AvJ6 Recommended for those who like jazz or fusion, or those who want to compare string sounds! #DAddario #DAddario #GuitarStrings #EHR350 #ECG25 #ECG24 #JazzGuitar #FlatWound