Tecnifibre Razor Spin is a square-profile co-polyester monofilament. The official description checked October 19, 2026 lists high-modulus co-polyester and polyurethane additives as its main materials.
Tecnifibre links co-polyester to precision and PU additives to feel and comfort. Building on that material direction from Razor Soft, the square section is described as adding ball bite for spin.
The official set length is 12 m, with 1.15, 1.20, 1.25 and 1.30 mm choices, made in France. These four gauges retain the product’s square-profile design.
Tecnifibre gives a recommended 22–25 kg tension range, a manufacturer reference to consider alongside the racquet’s range and installation conditions. Keeping PU addition, square profile and millimetre gauge as separate details identifies the chosen Razor configuration.
