Item Type: Telescope Focuser Adapter Material: Aluminum Alloy Thread Specification: M35x1mm Thread Depth: Approx. 7mm / 0.3in Interface Specifications: Approx. 1.25in (About 31.7mm) 1Linear Motion: During the focusing process, the inserted eyepiece or vertex does not rotate, and only performs linear motion, which is beneficial to observation and shooting. 2Aluminum Alloy: Aluminum alloy material, longer service life, more durable, easy to install and operate, easy to use and more practical. 3Fixing Screws: There are fixing screws on the side for fixing the 0.965in telescope attachment to the focusing tube. 4Stable Performance: The micro focusing is extremely precise, even at a huge magnification, it is still glossy and stable, and the performance is stable 5Scope of Application: The Telescope adapter is suitable for astronomical telescopes with a focusing barrel thread of M35x1mm. With this adapter, accessories with a 1.25inch interface can be used.1 x TelescopeFocuserAdapter