SVBONYTelescope Accessories Focuser Adapter 1.25 inches Adapter M42X0.75 Reflector Telescope Eyepiece Adapter

Like the brass pressure ring for the eyepiece. Used this to convert an old FD lens to a telescope. The adjustable nature of this helped me to align the eyepiece to the plane of focus, which was not possible with conventional T-mount adapters

Focuser does the job, solid focuser, would reccomend!

Mechanically beautiful, good value. For the scope builder. The knurled ring is threaded. Will try enhance with a little pipe tape on the threads. Simplicity for those who are discovering their deep sky objects visually. The thee point brass ring provides smooth control of focus. My reflector has a flat area for mounting, but should be adaptable to a round tube. Love the brass screws. Low profile focuser puts the eyepiece close as possible to the diagonal on a reflector telescope. Commended to the scope building community. Update here for the scope builder: I switched to red lithium grease on the threads instead of pipe tape. Slack in threads is normal with zero taper. Slack can then be taken out with knurled ring tension. I put some black tape on outside of ring. Operation is smooth and no mechanical play. Ready for the stars...

Bought, along with a T2 male to male adapter ring, to replace the stock eyepiece holder on a Svbony 1.25" all metal refractor focuser. The three thumb screws allow centering of an eyepiece or other device and the threaded two piece design allows very fine micro focusing adjustment. Threads on the two pieces could be a bit more precision.

Used this to upgrade poor quality eyepiece holder on an Orion Starblast 4.5 per Cloudy Nights thread instructions. Just need the male threaded half of this assembly. Works very well.