The SRH-36 Scope Ring holder is designed 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 threads.
Before you purchase, mesure inside diameter of your scope thread on the eyepiece.
(check the photos)