As the name implies, they screw in and out, have a jam nut to lock them down, can use them in place of adjustable rockers.
Oh, I didn't know ? I thought it was mostly used as a measuring tool..
Never trusted em, as I have seen to many snapped off at the threads.
That's because people measure them wrong and they usually interfere with something.
Technical editor? What power does that carry? LOL
That's because people measure them wrong and they usually interfere with something.
I have seen those used at the track and adjusted for more or less slack for more or less torque. Interesting results with Rhodes lifters.