Apollo Duratwist features the latest co-polymer monofilament technology that has been used to create this exceptional string, offering superb controllable power with the durability associated with hybrids. Apollo Titanium Pro is the string of advanced monofilament technology, offering ease of stringing and unique playing characteristics. Titanium Pro features controllable power with the fitness and touch demanded by today’s players. Apollo Supreme is a high performance hi-tech polyester string offering good durability with power, comfort and minimal string movement. Apollo Dynamic Power as “cutting edge” extrusion technology that makes this string a significant advance in monofilament strings. The resulting performance from high-tech polymers is a powerful yet comfortable string with exceptional tension hold and durability. HIDE