The first solid core, synthetic guy string construction that features an octagonal shape with 8 sharp edges for maximum ball bite. The benefits for the all court player are greater spin and responsiveness for more feedback. Ocho TNT Rx is for the synthetic gut player that has made a change to polyester strings, or the synthetic gut player that is considering making a change to polyester strings and shouldn't.

Ocho TNT Rx is the perfect string for the solid core, synthetic guy player that wants to experience the spin and control benefits that a polyester string can provide while retaining the power and feel of a solid core synthetic.