The grain window for that rood is 450 - 650, I have overhead int head that's 385grns at 31'. The skagit head I'm not sure no scale and lost the tag with the grns and length, its around 19' and around 550grns(oversized compact cut down) to fish 100 to 120grn tips and just screams out the guides!!! Make ya chuckle casts and watch the backing knot go out the tip top casts :Eyecrazy: