31 OD, 10 ID, 2 MM THICK WASHR

NEW - UNKNOWN 31 MM OUTSIDE DIAMETER, 10 MM INSWIDE DIAMETER, 2 MM THICK WASHER.
So you can estimate your shipping costs from www.ups.com or www.usps.com (this form required for all US Post shipments http://www.fiatplus.com/postal-agreement-pg-6.html ), this item weighs less than 1 pound, and can be shipped in a 3 x 3 x 3 box.
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