I had the same problem with U joints last year. Bought three to do all them at once. First two were US made, the third was china made, all three the same brand and model, even the same box, just the made in stamp on the bottom. The China made one as I was ripping the plastic bag off popped the grease fitting off and the little spring sprung out somewhere. Took it back and got another chinese one and was pressing the end cap into the yoke and it cracked. Took it back and they only had chinese ones so I drove to another store and asked the guy to look at the bottom of the boxes until he found a US made one and got it and went home and installed it. Same brand (blue and white box, I forgot the brand name though) for all 5.