Loomis does not tell anyone what there formulas are. They are all completely custom graphite/blends that are propritary to only Loomis. They will not let that out. Before Loomis ever started Gary worked with aero space composites and has since developed his own for his line of graphites used for his rods. If he let it out any company could copy them.

The new Steelhead series is a completey new blend that has something to make it snap back faster. It may feel like a Gl3 butt and a IMX tip but it isnt. It may be a blend of IMX or GL3 and another ingrediant to make it faster though. Could even be a different tapered spindle to gain its faster feel.