Stay in control and feel a crisp and clean impact when you play with the Tecnifibre Pro RedCode 1.25mm12m tennis racket string Set in Red, crafted for experienced players who are looking for unmatched spin, precision and durability. The Tecnifibre Pro RedCode 1.25mm12m Set is designed with a durable, lowfriction surface that holds its playability for longer than an average copoly string. Its stiff monofilament construction offers a controlled response for big hitters and their powerful strokes. Gauge 171.25mm Length 40ft12m Composition Copolyester monofilament. RedCode is great for big hitters looking for maximum durability, and it has a firm felling thanks to its co-polyester core. All Tecnifibre polyester strings use Thermocore technology, a heating and cooling process during the production phase to provide added flexibility to polyester strings for added comfort. 12m Set of String 1.25 Gauge Manufactured in France.