Large ,flexible, ribbed strain relief prevents separation of the cord jacket from the plug by easing the constant bending and providing a larger jacket to plug contact area. Firm Connector: Easy Grip PVC Connector. Over sized male and female plugs are molded in one solid piece from a special virgin compound and will not harden ,become brittle ,shatter ,or deform from hard job site abuse. No matter what model you ultimately choose, affordable RV adapters definitely need to be examined and chosen discerningly.The best electrical adapters certainly aren't made like typical models Double Copper Blades: RV electrical adapters are more than just a little bit important, but even so, affordable RV electrical adapters can be more than just a little bit effective at giving you the quality that you need Though the word cheap may have an uncertain connotation for some, a number of electrical adapter manufacturers offer a serious amount of quality for a surprisingly wallet-friendly price FeaturesConductor Blade: Full contact blades and ground pin to prevent break-off or pull-out.The full sized conductors provide superior electrical contact performanceWater resistant Cord: Standard PVC and TPE rubber cords will allow moisture to move through the outer and inner insulationReceptacle: As tools are plugged in and out of the receptacle , a small are can slowly eat away at the metal contacts in the plugWe solve the problem by using resistant full sized contacts and precise alignmentSpecificationsRating: 30A/125V to 30A/125VNema: TT-30P to Nema:L5-30RWeight: 5 lbs