Feature 1Safe Protection: Locking receiver hitch pin comes with a rubber cover to prevent water and dust penetration, which is weather resistant and tough. 2Application: Trailer hitch locking pin is used for anti theft, and widely suitable for RV, truck, camper, engineering vehicle. 3Easy Using: 5/8in diameter and 9/16in diameter locking pin, easy to lock after opening, sensitive response and flexibe operation. 4Low Noise: This kit includes 3pcs 2in rubber muffler pads that provides additional damping between your hitch and receiver, and can effectively reduce noise. 5Features: Locking receiver pin is made of durable and hard steel with black coated surface, which is rust proof and not easy to broken.Item Type:TrailerHitchLockingPinMaterial: Steel and zinc alloy and rubber .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Surface Treatment: PaintProduct Function: Prevent theftApplication: Suitable for RV Truck Trailer RV Engineering Vehicle CamperPackage List2 x Trailer Hitch Locking Pins1 x Pin2 x Keys3 x Muffler Pads