Black Cats! Set of 5! Since it's a set of 5, you can use strings of your preferred gauge! You can choose between ultra-low tension to low tension! Also, you can use them differently for pizzicato and slap techniques! Of course, you can also use them on a 5-string bass! I replaced the strings when playing rockabilly and bluegrass, and they became incredibly easy to play with the low tension! It feels great! From Chat GPT Sensei: I had the characteristics of these strings summarized: ・Tension Quite light, making it easy to play slap for over 3 hours without getting tired. ・Tone Thick, with deep bass. Pizzicato also blends well. ・Slap Attack Easy to play, and produces a popping sound. ※Does not respond to magnetic pickups. Please use acoustic sound or piezo-type pickups.