F6 Visual Extension Tube (TKP00105)

Slid right onto my focuser without any wobble—the machining tolerances are that precise. It let me reach focus with my reducer-corrector when I was a few millimeters short before. A simple piece that solved a frustrating problem.

The threads are incredibly smooth, no wobble at all when I attach my camera. It's a simple piece but the machining is flawless, exactly what I needed for prime focus.

Threaded it between the focuser and diagonal on my refractor, and the fit is dead-on precise with zero play. The 2-inch barrel locks down firmly, so I don't get that annoying tilt when switching between eyepieces. Works exactly as a visual tube should, no complaints.