The Head Intellitour Hybrid tennis string set is designed to provide players with unmatched comfort & control. It features the RIP Tour main string with a gauge of 1.30mm & the RIP Feel cross string with a gauge of 1.30mm. The RIP Tour has the thinnest centre core possible & slightly textured surface, whereas the RIP Feel offers a coreless ribbon construction. The ultimate hybrid RIP Tech string uses a soft elastic core to ensure unparalleled performance.