The Dunlop Silk 1.30mm tennis string set has a length of 12m (39.4ft), which enables re-stringing one racket. The Dunlop Silk has a gauge of 16 (1.30mm) &, as its name suggests, it provides an excellent touch & feel that is as smooth as a silk. The string has a premium construction incorporating a Du Pont PA66 multi-filament central core, fibres bonded with thermo elastic PU resin & a super bonded polymer outer coating to ensure superb power & comfort resulting in gut-like playability.