These are new and made to our own design! With all the Heim Joints we sell it only made sense to make them the way we wanted them...This is a 3/4" shaft with a 3/4" bore & Left Hand Threads (16TPI). Don't let the price confuse you, these are a very high quality Heat Treated Chromoly rod end, we can sell them for a tad more than a cheap mild steel heim because we sell so many and avoid the middleman. The housing is made from 4130 Chromoly and Heat Treated, it has a hard chrome polished finish and the Ball is made from 52100 bearing steel and heat treated also with a hard chrome finish. The race is made from injection molded Nylon that we have had tremendous luck with. Ultimate Radial Static Load - 28,800lbs. These are not tested to breaking point, they are tested to first deformation, that is a key point, deformation is not breaking. Many of the other companies test to destruction, you will stop using the heim after it has bent so why even care at what point they fall into a pile of pieces on the ground, that number just dosen't make any sense to the actual user...