Vixen DG DX 52 mm adapting ring

The Vixen DG-DX Series Adapter Rings are used in combination with either the #3917 DG-FS DX Digiscoping Adapter, #3918 DG-LV DX Digiscoping Adapter or the #37221 DG-NLV DX Digiscoping Adapter, completing the puzzle so that a digital camera which accepts filters can be affixed to the rear of a telescope or a spotting scope with an attached eyepiece.
52 mm male threading.