[Solve Focusing Problems] The extension tube features m48 female and male threads, resolving spacing issues in astrophotography and enhancing image clarity by eliminating stray and reflected light.
[Versatile Usage] This astronomic telescope m48 threaded extension tube comes in heights of 3mm, 5mm, 7mm, 10mm, 12mm, 15mm, 20mm, and 30mm, providing flexibility in obtaining correct image scale or precise spacing needed for reducers or field flatteners.
[Durable Construction] Made of all-metal structure with anodized aluminum finish, this extension tube is built to last. enjoy long-lasting performance and reliable functionality for your astrophotography needs.
[Customizable Spacing] Achieve precise spacing by utilizing various lengths of extension rings. choose from 1, 2, 3, or 8 rings depending on your specific requirements.
[Enhanced Astrophotography] Enhance your astronomical telescope photography with this extension tube set. ​ for capturing clear and ​ images, this kit is a must-have for all ​ enthusiasts.

Spec:
Item Type: ​ Length Extension Tube Kit
Material: Aluminum Alloy
Gross Weight: 107g / 3.8oz
Extension Tube Height: Approx.3mm / 0.1in, Approx.5mm / 0.2in, Approx.7mm / 0.3in, Approx.10mm / 0.4in, Approx.12mm / 0.5in, Approx.15mm / 0.6in, Approx.20mm / 0.8in, Approx.30mm / 1.2in
Thread: M48X0.75
Use: for Astronomical Telescope Photography

Package List:
8 x Extending ​