Made in the USA
Correct pushrod/lifter adjustment requires starting with fully pumped up lifters.
Quick-install pushrods have a 7/16"-20 threads per inch. 0.050" adjustment per turn. Two turns = 0.100"
Tube material starts out as 7/16" rod OD, it then gets turned down to 3/8" OD leaving heavy duty 7/16" - 20 threads for the base and jam nut
Includes four chrome lower tubes and clips to be used in conjunction with factory inner tubes, covers, caps springs and washers