Time to feel comfortable even in the playoffs at the court with Tecnifibre Razor Code ATP Tennis String Set as it is the tennis racquet string that gets you to the winning short with ease. Poly string technology is taken to a new level with the introduction of Tecnifibre ATP Razor Code 1.25mm/17g Blue. Razor Code is the string of choice of ATP Top Ten player Janko Tipsarevic, and brings a new feel to monofilament strings.