M48 Telescope Extension Tube 5mm Black Alloy

1 All metal, anodic oxidation, aluminum manufacturing process, can used for a long time. 2 Using this extension tube, can obtain correct image scale. 3 Inner wall with extinction treatment to avoid radiating light affecting image. 4 Fine workmanship, practical astronomical telescope accessory. 5 Professional manufacturing, stable characteristics and high reliability.

What's in the box
1 x Telescope Extension Tube