GLX is still one of the lightest, most sensitive high-performance rods we make. It is noticeably lighter and more sensitive than our IMX and all the other lower modulus materials we use. It has been the cornerstone of our product line for over 20 years. Its high modulus and high tensile strength allow us to use as much as 15% less material than a comparable IMX rod creating a very dramatic reduction in weight and maintaining the same power.