8PCS M48x0.75 Telescope Extension Tube Set,2"/M48 Extension Tube Kit Length 3mm 5mm 7mm 10mm 12mm 15mm 20mm 30mm Extending for Astronomical Telescope Photography

• 【TELESCOPE EXTENSION TUBE】- M48X0.75 telescope extension tube set is used to obtain the correct image focal length or the required precise spacing and solve the spacing problem in astronomical photography,help you to achieve the nicely backfocus distance.
• 【8PCS EXTENSION TUBE】- This set includes 3mm, 5mm, 7mm, 10mm, 12mm, 15mm, 20mm and 30mm telescope extension tube.With a solid construction,can be easily installed and removed.You can use 1, 2, 3, or up to 8 extension rings based on your needs to achieve required spacing,which provide you unparalleled flexibility and convenience.
• 【M48*0.75 THREAD】- The extension tube has M48*0.75 female thread and M48*0.75 male thread.With matting interior thread design,our telescope extension tube can effectively eliminates redundant light,help you to eliminated a series of focus issues in astronomical photography.
• 【PRACTICAL】- Focal length extension tube kit can help to enhance image quality,make the astronomical photography more easier.
• 【ALUMINUM ALLOY MATERIAL】- The extension tube is made of aluminum alloy with CNC process to ensure the precision of the extension rings,anodic oxidation treatment,resistant to corrosion,suitable for a long time use.This is a great accessory for astrophotography.

Specification: Item Type: Focal Length Extension Tube Kit Material: Aluminum Alloy Male Thread: M48*0.75 Female Thread: M48*0.75 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 Package List: 8 x Extending Ring