Dunlop apex power tennis racket the dunlop apex power tennis racket is constructed with an aeroskin surface technology with hm6 carbon for superb durability and performance through your swing this tennis racket also sports vibrotech for dampening during your shots and is complete with a soft dunlop tape grip to the handle for comfort tennis racket aeroskin technology hm6 carbon graphite vibrotech headize 100sqin balance 335mm string pattern 16x19 length