Rare Miura CB-1008 FE 99.3% Irons 4-PW ( 7pcs ) - Heads Only
You are looking at a very rare set of Miura FE99.3 irons and while they may look like the standard CB-1008 these are made entirely of a different material and mold. The shape is also subtly different with a slightly longer heel to toe length.
What is FE99.3%? Originally used more than a decade ago by Bridgestone’s very rare and limited Maru Spec wedges FE99.3 is being utilized once again. The main difference is that it feels softer at impact. Carbon in typical carbon steel material is considered an “impurity”. 99.3% Pure Steel contains a lot less carbon and is supposedly a lot softer.
Miura claims two difficulties when dealing with FE99.3 the first is that they have additional steps required to achieve this level of purity which adds time and cost. The second is that grinding the 99.3 heads are more difficult due to the material being a bit more “sticky” on the grinding wheel. Takes a highly experienced grinder/craftsman to do them right.