Features 1、102mm Reflector Focusing Mount: The telescope focusing seat adapts to 141mm I.D. reflector tube with 67mm focusing length. The mount has three pre drilled holes for easy installation and adjustment. The micro focusing is precise and accurate, and remains stable even under huge magnification. 2、Fixing Screws: The telescope focusing seat comes with fixing screws on the side for securing the 1.25 inch eyepiece inside to ensure stable viewing of the eyepiece. 3、Matte Finish: The telescope focusing seat is fully threaded internally to minimize reflections. The matte finish effectively reduces the interference of unwanted light reflection and provides clearer and brighter observation images. 4、Application: The telescope focusing seat is suitable for DIY homemade reflector telescope use. Precise size and fixing design make it perfectly match the requirements of homemade telescopes. 5、Durable Material And Easy To Operate: The telescope focusing seat is made of ABS plastic, which has a longer service life and is more durable. And it is easy to install and operate, more convenient and practical to use. Specification Item Type: Reflective Telescope Focusing Seat Material: ABS, Plastic Weight: Approx. 108g / 3.8oz Focusing Mode: Oblique Teeth With Manual Focusing Package List 1 x Reflective Telescope Focusing Seat