Even with adjusting the drag on the focus knob on ATN's X-Sight II scopes, they still require a pinch or grab with two fingers to change the focus. These focus knobs allow for one finger adjustments, improving the ergonomics and making your response time quicker.
They work equally well in stalk, blind or stand hunting.
Knobs can be painted using a plastic primer before final color coat.
See the video below for mounting instructions. The knobs are designed to fit tight, and during installation the fitment can seem too tight, but that is by design.
A NOTE ON KNOB SIZE AND SCOPE MOUNTED LIGHTS:
If you're mounting your IR illuminator on the side of your ATN scope, there may be some clearance issues with the original knob and the light.
To determine if there are any clearance issues, measure from the right of your illuminator bell to the left of your knob.
I have confirmed that the T38 Evolva and the ATN IR850 Pro are large enough to need the smaller knob.
If the measurement is 5/8 inch or more, the 7 Star knob will fit without hitting the illuminator.
If it's between 1/2 and 5/8 inch, then the illuminator will interfere with the original 7 star sized knobs, and you should order the smaller 6 Star knob or adjust the position of the illuminator forwards or backwards to a position that doesn't hit the knob.