I looking to buy new small diameter carbon arrows, Any sugestions?

Look at Easton's Axis line of arrows. should be about what you're looking for. JMHO

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If you can still find someone with the Easton A/C super slims that they discontinued late last year check into those too.

Another Easton option is the Epic ST, they run 1/64" bigger on O.D. and 0.4 gpi lighter. Last I looked they are a few bucks less as well, they run $75/doz. at Cabela's.

Beman has the MXF which is almost the exact arrow as the Axis. I say almost because they are 0.6 gpi heavier in the 400 size. Cabela's lists these at $95/doz.

If you don't care about price there's Carbon Express. There arrows have pretty much the same O.D. The down side, IMO, is the price. The Terminater Lite Hunter runs around $120/doz. and the Maxima are $140/doz.

A friend told me Bass Pro has the Terminator Lite Hunter arrow, with the Bass Pro brand on it for about $10/doz. less. I can't remember what they call them.