Hey guys, I was gifted a pristine pair of leupold 59125 tactical binoculars. The objective ends are threaded, so I was thinking about getting a pair of ARD's for them. they measure 50mm, but a 50mm ARD (at least the one's I have are about 54mm) Does anyone know what size I need for the bino's? Or if anyone even makes ones that will thread in. Thanks in advance.