Update:
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Bought Metabo NP50A, it is $120 on Amazon:
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At 80 PSI it drove 1 3/8¡± pins consistently. It is advertised to handle up to 2¡± but 1 3/8¡± is the longest I had as that was the limit for the Grex I bought and returned. It drives as short as 1/2¡±.
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I feel comfortable with keeping this as I have 20 PSI head room and would not care if it did not drive 2¡± all the way.
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Imran
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imran