The dunlop silk 130mm tennis string 200m reel provides you with many metres of a premium string that features a dupont pa66 multi filament central core fibres bonded with thermo elastic pu resin and a super bonded polymer outer coating this unique construction provides the player with an outstanding power and comfort to ensure a gut like playability the name of the dunlop silk string refers to its excellent feel that is as smooth as a silk the string has a gauge of 16 130mm