2.5" Lobed Turn Knob (1/2-13 Female Coarse Threaded insert is made of brass) replaces any worn out or missing turn knob that installs onto 1/2-13 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. We use these same Italian-made on the exercise equipment we manufacture in our own facility.
Handle is made of unbreakable black ABS and will not crack off or strip off from bare handed use. Threads hold up very well compared to cheap units.