This trailer jack seem to be made with good quality materials. but like many other items manufactured in china THEY DON'T GIVE A CRAP when it comes to quality of manufacturing. the 4 holes in the swivel plate for the locking pin where out of location so to fix the problem they just elongated the holes which made the fit extremely sloppy. also the fit between the swivel plate and the main body of the jack had about 1/4" of play in it and the location of the snap ring groove was wrong so as your going down the road all it does is rattle. Lucky i was able to use the swivel plate off my old trailer jack witch made the fit much better.