[ Design] - Anodized aluminum construction provides durability, while the m48 threaded extension tube comes in various heights for accurate image scaling.
[Eliminate Stray Light] - The female thread design eliminates stray and reflected light, enhancing image clarity and perfection during photography.
[Improved Focusing] - The extension tube features m48 female and male threads to solve spacing issues in astrophotography, ensuring clear images.
[Easy to Use] - All-metal structure ensures reliability, helping achieve the correct image scale and spacing required for reducer or field flattener.
[Versatile Spacing] - Achieve the required spacing by combining different extension rings, offering flexibility with 1, 2, 3, or 8 rings as needed.

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 Ring