Svbony SV129 extension tube kit with M42 thread of 5mm 10mm 30mm suitable for astrophptography
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1. Made of fully anodizing aluminum material, durable for long time use
2. This kit including three extension tubes of different length, they can be used separately or together, so you can adjust the appropriate distance to get a clear image
3. The extension tube has a M42 male thread and a M42 female thread for solving distance problems in astrophotography and eliminating a range of focusing problems