CURT 22277 Rubber Trailer Hitch Cover, Fits 2-1/2-Inch Receiver: Automotive. Buy CURT 22277 Rubber Trailer Hitch Cover, Fits 2-1/2-Inch Receiver: Hitch Covers - ✓ FREE DELIVERY possible on eligible purchases. Protects a 2 1/2" x 2 1/2" receiver tube opening when not in use . Ideal for CURT class 5 Commercial Duty trailer hitches . Adds a clean, finished look and keeps debris out . Friction fit does not require a pin and clip to hold in place . Constructed from tough black rubber . If you own a hardworking vehicle with a class 5 trailer hitch, you know how quickly the receiver tube can get built up with dirt, debris and road grime. It does not take long before inserting a ball mount or hitch-mounted accessory into your trailer hitch becomes more difficult than it should ever have to be. Keep your trailer hitch's receiver tube clean and protected when not towing with a CURT hitch tube cover. This CURT 2 1/2" x 2 1/2" hitch tube cover is constructed from tough black rubber and provides the perfect finishing touch for a CURT class 5 Commercial Duty trailer hitch or any trailer hitch with a 2 1/2" receiver tube opening. It inserts into the receiver tube with a friction fit, meaning no hitch pin or clip is required, and it offers long-lasting protection against the harsh elements. . . .