Designed for serious squash players the karakal x slam ff is a powerful racket featuring 4 nano graphite nodes that stiffen and strengthen the frame as well as a midplus 744in2 head for a balance of power and control suitable for players who want a little more weight in their racket the x slam ff weighs 140g 49oz and has a head heavy balance that improves stability it comes strung with karakal nano 125 string for superior elasticity power and durability and offers karakals innovativ