Mizuno purists may recoil in horror with the news that the company has released its new MP-58 iron, the first player's club in its history with an insert.
But fear not, Mizuno say the lightweight Titanium insert in the MP-58 ensures the solid feel of their traditional player's irons is not compromised while dramatically increasing perimeter weighting for added stability and forgiveness - the best of both worlds.
They have achieved this by actually forging the 11g Titanium insert into the back of the head meaning the club has the feel of a one-piece construction head .
The Mizuno MP-58 irons replace the retired MP-57 irons and sits directly in between the current MP-62 and MP-52 irons in terms of workability and forgiveness.
Masao Nagai, global director of R&D at Mizuno, insisted the company had refrained from using an insert in their irons until they could be abolutely sure it would not compromise the feel.
He added: "Using lightweight Titanium where a cavity might normally be, the MP-58 spreads its weight, without losing the thickness that's so important for a solid feel.
"One concern was that the new technology didn't compromise the feel of our Grain Flow Forged construction. By forging the 11 gram Titanium plate directly into the head, we ensured that the Grain Flow was not disrupted and the feedback maintained.
"The MP-52 is still a little easier to use but the MP-58 gives them more of the shape and ball flight they'd [Tour players] expect of a tour iron."
The Mizuno MP-58 irons conform to the 2010 groove regulations and comes in a Double Nickel Mirror Chrome finish. £105 per club.
For more information pick up the next copy of Today's Golfer on sale September 10.