Four sets of Caribe Music guitar strings. The packaging has some minor damage due to age and storage at home. They were 1,680 yen (tax included) per set when purchased. Handmade electric guitar strings, ECM10 model, a combination of nickel and brass for high quality. - Brand: CARIBE MUSIC - Model: ECM10 - Type: Electric guitar strings - Features: Handmade - Quantity: 4 packs - Material: Combination of nickel and brass Thank you for looking.