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Old 02-08-2009, 01:48 PM
Chevrolet4x4s Chevrolet4x4s is offline
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My autodarkening helmet is a Nothern Tool unit,has uv protection even if it fails to darken(which it has only done one time,that I remember, I had the sensors blocked oops when I was doing my pipe welding certification),iirc the speed is 1//20000th of a second.

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