It largely depends on what you're going to do to these shafts. Pure them to some degree? Or just cut and glue?

If you're going to pure them (spine/flo/deflection), then you can buy whatever shaft you like.

If you're just going to cut and glue, Mercury makes great shafts. But you do have to tip trim them (ie cut some off the tip to get the correct flex - you get progressively longer cuts as you move towards wedges).

True Temper Dynamic Gold shafts with Sensicore are fabulous - but again, you have to tip trim them.

The great part about Rifle shafts (as long as you are NOT BUYING BLANKS) is that they're usually sold as a set for irons (8 shafts) already frequency matched - you just stick 'em in and butt trim to length.

As a note - you will butt trim all your clubs to length, generally speaking.

You'll find most players are playing True Temper Dynamic Gold shafts.

If you like your clubs lighter, you might try Dynamic Gold lite, or Dynalites from True Temper.

The caveat: Make sure that you buy the right tipped shafts for your heads.

Shafts (and hence, heads), come in either A) Parallel or Taper tip, and most irons are a .370 diameter. But make sure you double check, and buy the appropriate shafts.

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True Length Technology Fitter - www.truelengthtechnology.com
It's live! - www.ShipShapeClubs.com
PCS Class 'A' Clubfitter

A new highlight: Golfing the home course on Christmas Day.

I say it too often: If it's golf club shaped, you can play with it.

For the record, I'm a club doctor, not a swing doctor.