M48x0,75 female and M28,6 male (can be screwed into the 1.25" filter thread of eyepieces, alignment lasers or filters and extends this to M48x0.75 (2" filter thread)
M48x0,75 female and M28,6 male (can be screwed into the 1.25" filter thread of eyepieces, alignment lasers or filters and extends this to M48x0.75 (2" filter thread)