If you're going for T12 builds, the Knucklehead Radar helmet Xur is selling is T12 capable.
No rerolling required. Just buy it and infuse it to 335.
The stats at max light are:
[b]45[/b] (64)/[b]45[/b] (64) [b]Int[/b]/[b]Str[/b]
Perfect for 4/4/4 or 2/5/5 builds.
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Cheers.