Prince Synthetic gut Duraflex is one of the most popular non Polyester tennis string for the last 20 years with solid centre core and Duraflex Armaid fibre outer wrap for excellent performance, control and durability. Available in 15L gauge, 1.35mm, 16 gauge, 1.30mm and 17 gauge, 1.25mm. Available in White and Gold. Other colours available on request, Black, Green or Yellow. 16g and 17g can be used for Squash and Racketball stringing. 660ft for £70.00. 38ft set for £6.00. Made in Japan.