1. M48 Thread Design This telescopic camera extension tube features a standard M48x0.75mm thread design with an outer diameter of 2 inches, which ensures compatibility with most telescopes, cameras and astronomical devices.
2. ANTI-REFLECTIVE COATING - Inner threads are treated with a matte finish to minimize optical reflections and interference. This ensures clearer and brighter images during photography.
3. PRECISE LENGTH ADJUSTMENT This telescopic camera extension ring allows for accurate image scaling, meeting precise spacing requirements for reducers and field flatteners.
4. USER-FRIENDLY DESIGN - Designed for easy installation and removal, this extension tube is suitable for both beginners and experienced users. Whether you are an amateur or a professional astrophotographer, you can easily attach it to your telescope for accurate observations or images.
5. STURDY CONSTRUCTION - Made with an all-metal aluminum alloy and treated with anodized aluminum, this astrophotography focus extender tube boasts enhanced durability. It is built to withstand harsh conditions.

Specification:
Item Type: Telescope Extension Tube
Material: aluminium alloy.
Anti-treatment: Anti-thread inside.
Internal thread specification: M48x0.75mm/M48x0.03inch
External thread specification: M48x0.75mm/M48x0.03inch
External thread depth: approx. 4mm / 0.16 inches
Outer diameter: approx. 2 inches / 50.8 mm
Flange distance: approx. 50mm/1.97inch
Total length: approx. 54mm/2.13 inches

How to use:
Install and use.

Packing list:
1 x Telescope Extension Tube
1 x