Explore Scientific finder-scope rings are all made for 50mm finders. Choose from a classic low profile bracket (about an inch tall), one that is a tad higher (1.5") or a high profile bracket that stands 4" above the finder-scope base.
Regardless of the height you choose, these brackets have two rings to hold your finder firmly yet gently, and each ring has three adjustment points. Heavy-duty plastic thumbscrews are included, and have large heads for easy adjustment even if you're wearing gloves.
Because your telescope may not fit in its case with the finder-scope attached, you will appreciate the quick release feature on Explore Scientific finder brackets. The bracket itself dovetails into the finder base (sold separately), and locks down with thumbscrews. It is a simple thing to remove or install your finder and bracket on your telescope in this manner.
