Black 40″ Post Guide-On C.E. Smith Trailer Post Guide-Ons give a clear visual marker to know you’re backing, loading, or unloading your boat trailer evenly and properly to avoid costly damage. Unlike plastic guide-ons that fall apart or break with minimal impact, C.E. Smith Post Guide-Ons boats square 16 gauge steel uprights, pre-galvanized for corrosion resistance, and 2-3/8″-dia. Black PVC posts, to stand up strong season after season.Features:Provide a clear marker for backing, loading, or unloading your boat trailer16 gauge square steel uprightsPre-galvanized construction for corrosion resistance2-3/8″ black PVC postsBuilt to last season after season40″ tallNote: Check with your state Department of Transportation for restrictions regarding maximum trailer width*Sold in pairsWARNING: This product can expose you to chemicals including ARSENIC ,CADMIUM which are known to the State of California to cause cancer or other reproductive harm, and BERYLLIUM,COBALT METAL POWDER,NICKEL (METALLIC) which are known to the State of California to cause cancer, and Chromium (hexavalent compounds),LEAD which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.