About this product
Astro Essentials T / M42 Extension Tube Set (4mm, 5mm, 6mm, 7mm, 8mm & 9mm)
A handy, good value, nicely made set of shorter T / M42 extension tubes: 4mm, 5mm, 6mm, 7mm, 8mm & 9mm.
These are suitable for use with a wide variety of T / M42-threaded equipment and can be used singly or in combination to achieve your desired back focus.
39mm 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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