Grym X is the overstable brother of Kastaplast Grym. It is a distance driver from Kastaplast which is designed for players who throw very far and with very high speed. If you are looking for a distance driver which can also be used on the most windy of days or which is good for the sidearm, then the Grym X will definitely be right for you.
The glow plastic from Kastaplast is of highest quality and recognized as some of the best glow plastic in the world.