?cordmitpro rv 50 amp twist lock plug male to 50 amp locking 90 degree female rv adapter for 50 amp rv extension cord, 50 amp dogbone rv connector for pressure relief, etl listed is up for auction in Tools & Home Improvement. The current bid is $3.50, 93% below the $49.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.