Feature: 1. Precise Focusing: The telescope focusing seat features a 67mm focal length, allowing for ultra precise focusing. It effortlessly adapts to reflectors with an inner diameter of up to 117mm, ensuring a stable operation even at high magnification. 2. Secure Mounting Screw: Equipped with side screws, this seat securely holds 1.25 inch eyepieces in place, keeping them stable during observations. No more worries about the eyepiece wobbling or slipping out of position. 3. Anti Reflection: The internal threads of the seat are fully treated, significantly reducing unwanted reflections that could hinder the quality of your observations. 4. ABS Plastic Construction: Made of premium ABS plastic, this focusing seat offers exceptional longevity and durability. Its sturdy construction ensures that it can withstand frequent use and intense observations. 5. Perfect for DIY: Designed specifically for DIY enthusiasts, this telescope focusing seat is easy to install and operate, making it an excellent choice for self made reflector telescopes, providing versatility and convenience. Specification: Item Type: Telescope Focusing Seat Material: ABS, plastic Weight: Approx. 171g/6.0oz Focusing Mode: Bevel teeth with manual focusing. Package List: 1 x Telescope Focusing Seat