Firestorm 17L/1.20 String Metallic Gold

Matteo Berrettini String of Choice!

Firestorm is the string called our top of the Line String, Featured as X-treme Power, this is the string that is favorite amongst ATP Players using Signum Pro, this string has an amazing power, great durability, great tension mainteinance and a feeling that is worth trying. We´ve had amazing feedback from this string, so we think this is a must for any Tennis Enthusiast.