1.5" O.D. Lobed Turn Knob (3/8-16 Female Coarse Threaded insert made of brass). Replaces any worn out or missing turn knob that installs onto 3/8-16 male threaded stud found on many types of exercise equipment adjustment arms and sliders, etc... This is the absolute highest quality turn knob we have ever come across. Handle is made of unbreakable black ABS and will not break off or strip off from bare handed use.
Threads hold up very well compared to cheap units. Italian Made!