1Precise 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. 2Secure Mounting Screw: Equipped with side screws, this seat securely holds 25 inch eyepieces in place, keeping them stable during observations. No more worries about the eyepiece wobbling or slipping out of position. 3Anti Reflection: The internal threads of the seat are fully treated, significantly reducing unwanted reflections that could hinder the quality of your observations. 4ABS 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. 5Perfect 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.1 x Telescope Focusing Seat