Feature:1. Standard Viewfinder Mount: The standard viewfinder mount on top is compatible with guide mirrors and viewfinder dovetails.2. Mounted Securely: The knurled locking ring is easy to tighten directly by hand and is securely fastened with a metal locking screw.3. Aluminum Alloy Material: Made of aluminum alloy to ensure light weight but ultra high strength support, anti corrosion and wear resistance.4. Dovetail Base: Dovetail mounts fit into viewfinder scope or reflex sight mounts so you can securely attach sights to any telescope.5. Simple Operation: Telescope finder scope bracket is easy to use, just place it on the optical tube and tighten the screws.Specification:Item Type: Telescope Finder Scope BracketMaterial: Aluminum AlloyScrew Hole Size: 1 or 4 InchTop Edge: Approx. 23.4mm or 0.9inMiddle Edge: Approx. 34mm or 1.3inGroove Height: Approx. 10mm or 0.4inBottom Edge: Approx. 34mm or 1.3inColor: As Pictures ShownWeight: Approx. 53g or 1.9oz.Package List:1 x Finderscope Mounting Bracket