They should get rid of 1 7/8" and just make 2" the standard. Too many people assume it's 2" and bad things happen. One time there was a guy towing a portable air compressor with pointless hitch set up on the compressor. The truck had a 2" ball. Needles to say when he was going down the highway he hit a bump and the compressor went off the ball and rolled over. Oh well. He should have known better. You could see all the dents in the back bumper when he would stop the pintle would slide up the hitch and hit the bumper. Then go back down on the ball. He was lucky no one got hurt.