Fangrui Product Details Revolutionary Precise 3-axis Design: The Telescope Phone Mount Features 3-direction Precise Adjustment, Up/down, Left/right, Forward/backward, To Align Your Cell Phone Camera With Eyepieces Precisely. Z Axis Adjustment Helps Reach The Correct Eye Relief To Capture The Clearest Images And Videos Of Celestral Objects, Wildlife And Other Distant Objects With Your Smartphone Like Before. All Metal Build, No Sagging: Made Of Rigid Aluminum Alloy, The Universal Digiscoping Adapter For Robust And Durable, Doesnt Bend, Tilt Or Warp, Holds Your Cellphone Tight And Perpendicular To The Telescope Eyepiece, Maximizes Stability And Minimizes Shaking Throughout Setup, With Rubber Pads On Both The Eyepiece Clip And Cellphone Clamp Protecting Your Devices Against Abrasion. High Precision Fine-tuning: The Smart Phone Adapter For Telescope Is Engineered And Machined For High Precision Adjustment And Razor-sharp Alignment With The Lens. Easy-to-reach Xyz Fine-tuning Knobs Realize Stable And Accurate Adjustment. Firm