About this product
Astro Essentials T / M42 Extension Tube Set (5mm, 10mm, 15mm & 20mm)
A useful set of T / M42 extension tubes for use with a wide variety of T / M42-threaded equipment.
Each extension tube can be used singly or in combination to achieve your desired back focus length.
50mm total back focus when all extensions used.
Black anodised Aluminium.
M42x0.75 male thread at one end and M42x0.75 female thread at the other.
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