Description: 【Standard Finder Base】: Dovetail Base suit for finder scope, Pointer bracket on telescopes 【Application】: Suit for finder scope; Pointer bracket or reflex sight bracket on telescopes; great for adding a second or third aiming device to your telescope 【Material】: Made of metal material; the base is made of diecast metal and two screws 【Easy to Use】: You can use screws to assemble it to your optical tube. The use is easy, just put it on the optical tube and tighten the screws 【Dovetail Base Easy to Use】: Features two locking thumbscrews for better stability and reliability. Locking screws is easy to tighten directly by hand. Specification: Material: Metal  Size: 4.2cmx3.9cmx2cm/1.65inchx1.54inchx0.79inch Package Includes: 1 Telescope Finderscope Mount Bracket Note: Please allow slightly errors due to manual measurement and different monitors.