*** Kizuna Z63X Premium *** Ultra-rebound By a thin gauge of 0.63mm, you can experience a pleasant pretend excl. Firmly transmitted high hitting sound and sharp feel at impact is a string that was realized the power full of repulsive force. SPECIFICATION: * Gauge: 0.63mm * Feeling: Medium * Length: 10m * Material and Structure * Core yarn: high-strength nylon / multifilament * Side yarn: high-strength nylon / blading processing *** Made in Japan ***