The tecnifibre tgv 135 tennis string has been designed for players dealing with arm problems and for those seeking superb touch and feel this multifilament string composes of a 45 polyurethane inner core that provides excellent comfort and spl silicone pyrogene lubritec anti abrasion coating that increases durability by up to 40 the tecnifibre tgv string has a 135mm gauge and is available in a 200m 656ft reel