6mm ID x 18mm OD x 1.6mm Thickness This Fender Washer is made of 18-8 (304) Stainless Steel which is one of the highest forms of corrosion resistant metals M6 Fender Washer,18-8 (304) Stainless Steel Flat Washer, 6mm ID x 18mm OD, 200Pcs
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