The SRH-36 scope ring holder is Design for old hawk and other scopes with m36 x 0.6mm pitch on the scope eye relief.
The SRH-36 its alternative to HSW-1 this can be connect to all our male m42 threads.
the male side is 36mm X 0.6 threads
the female side is m42 X 0.6 threas
please note before you purchase, mesure inside diameter of your scope thread on the eyepiece,
(check the photos)