Explore Scientific Tall Finder Scope Rings w/out Base. These Explore Scientific Tall 50mm Finderscope Rings with heavy-duty plastic thumbscrews included hold your finder firmly yet gently with three adjustment points and the large heads are easy for adjustments. Explore Scientific Tall Finder Scope Rings make it that much easier to enjoy night sky gazing with a sure and steady view. Specifications for Explore Scientific Tall 50mm Finder Scope Rings: Weight: 7oz; 198.4g Length: 73mm Width: 61mm Height: 115mm Package Contents: Explore Scientific Tall Finder Scope Rings Explore Scientific Tall finder scope rings (Base not included)