Astromania Extension Tube, T2 Extension Tube Kit with M42x0.75 on Both Sides - Length 8mm 15mm 20mm 40mm, Telescope Photo Adapter Astrophotography Accessories Fit for M42 T2 T Ring DSLR/SLR Cameras

Astromania Extension Tube, T2 Extension Tube Kit with M42x0.75 on Both Sides - Length 8mm 15mm 20mm 40mm, Telescope Photo Adapter Astrophotography Accessories Fit for M42 T2 T Ring DSLR/SLR Cameras

Product Features

• Male thread - M42X0.75; Female thread - M42X0.75; eliminates a range of focusing problems
• The extension tube has a T2 interior thread and a T2 exterior thread for elegantly solving spacing problems in astrophotography
• Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners
• All metal construction and anodizing aluminium process; durable for long time use
• The required spacing can be achieved by combining several extenders of differing lengths; you can use 1 piece 2 pieces 3 pieces or 4 pieces of the extension rings as you like