The POS16 rod end bearing helps machines move with great accuracy. It makes sure parts line up the right way. Its strong build means you do not have to replace it often. This saves you time and money on fixing things. The bronze liner inside keeps itself slippery. This lowers rubbing and makes the machine run smoother. It also helps the equipment last longer. Pick the thread type that... https://www.gonuobearing.com/How-POS16-Rod-End-Bearing-Improves-Performance-in-Automation-Equipment.html