T2 (M42x0.75) to 1.25" Telescope Spacer / Extension Tube (20, 25, 30 mm)

This is a simple T2 (M42x0.75) to 1.25" extension tube designed for astrophotography setups and telescope accessories. The spacer allows you to increase the optical distance between T2-threaded components and 1.25" accessories. It can be useful when additional backfocus or spacing is required. Unlike many adapters, this model does not use a set screw or compression ring. The design relies on a tight friction fit, which helps avoid scratching anodized aluminum adapters such as camera T-rings. This makes it particularly convenient for setups like: T2 camera adapters Sony E / mirrorless T-rings lightweight astrophotography configurations The internal thread is M42x0.75 (T2). Features T2 (M42x0.75) internal thread 1.25" telescope barrel simple lightweight design no set screw (scratch-free friction fit) Typical uses astrophotography spacing telescope backfocus adjustment camera adapter spacing lightweight eyepiece extensions Printing recommendations layer height: 0.16–0.2 mm material: PLA / PETG print orientation: vertical (thread up) Threads were tested on standard T2 camera adapters.