Product information "Sidewinder thread adapter eyepiece"
62190 Hawke sidewinder thread adapter (before 2015) Okular
Thread adapter for connecting the new Hawke Metal Flip-Up cover and sun visors to Sidewinder Target scales (older than the 2015 series).
With the adapter you can upgrade from screw -on metal cover to flip up cover made of metal and honeycomb sun visor. The thread adapter is simply screwed onto the eyepiece or lens. You now have a female thread on which the new Metal Flip Up Cover and other accessories fit.