Metal 1.25" extension tube M42×0.75 for astronomy

1 1.25 inch stationary photographic extension tube, suitable for astronomical telescope. 2 31.7MM/M42x0.75mm, magnification radiography, direct focus photography. 3 Outer thread M42x0.75 mm, precise thread ensures firm connection. 4 Inner thread, can be connected with 1.25inch filter. 5 All internal matte threads, will not influence imaging.
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div.Section0{page:Section0;}Photographic Extension TubeMaterial: aluminium alloy

What's in the box
1 x Photographic Extension Tube