The head megablast 125mm racketball string set is 12m 40ft long which is enough to re string one racket the megablast has a multifilament centre core with co polymer braided multifilament wraps which creates a highly elastic snap back string that can deliver maximum power without compromising on comfort it also features a slightly textured carbon co polymer coating that ensures extra durability and less string movement the megablast racketball string has a 17 125mm gauge