Polyester. The Tecnifibre Pro Red Code 17 was designed for heavy hitters. Created with a central polyester monofiber core and an extra polyester coating, this string delivers ultimate durability.
- Chemical resin enhancement improves feel while offering great spin potential.
- Polyester coating increases durability and also makes it easier to string.
- Polyester core provides the ultimate durability.
- Excellent durability, power and tension maintenance.
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