This is the fine thread valve end plug with 2 viton o-rings
This version will fit Dive Rite, Edge/Hog, Thermo, Halcyon, Sea Elite and many other manifolds
This model DOES NOT work with Blue Steel, OMS and a few others!
The threads are very fine on this eng plug
We call this one a right hand version.. When looking at your valve your knob will be on the LEFT side and you would screw in the end plug on the right side!