Looking through various fishing rods online i have seen variations of graphite rods. Things such as rods that have 85 million modulus,70 million modulus, 50 million modulus, 45 million etc... Then i find rods that are IM6 graphite, IM 7 and IM8 graphite. I'm not sure of what these different aspects mean but i do know that when searching generally the higher the number the higher the price. Just a little lost on what exactly the "modulus and IM's are.
Thanks for any help.