This is a 7/8" shaft with a 3/4" bore & Left Hand Threads (14TPI). Sometimes smaller in the right places is better! Don't let the price confuse you, these are a very high quality Chromoly rod end, they are definately not a cheap mild steel heim. The housing has a hard chrome polished finish and the Ball is made from 5200 bearing steel and heat treated with a hard chrome finish. The race is made from injection molded Nylon. Approximate Ultimate Radial Static Load, 34,060lbs. These are not tested to breaking point, they are tested to first deformation, that is a key point, deformation is not breaking. The other companies test to destruction, I believe if they tested using the same methods the results would be very close, if not the same.