Protects wheel bearings from the elements during all trailer operations. Automatically maintains the correct internal pressure ? can not damage seals. Chrome plated steel construction with a clear Zinc finish. 2/pack.
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Prop 65 Warning
WARNING: This product may contain one or more chemicals known in the State of California to cause cancer and/or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov