5mm Long 42mm Extension Tube (SFE-M42-005)

Name: 5mm Long 42mm Extension Tube (SFE-M42-005)
Brand: Stellarvue
SKU: SFE-M42-005
Price: 13.68 USD
Availability: InStock
Rating: 4.8 (5 reviews)

5mm Long 42mm Extension Tube (SFE-M42-005) - Main image

$13.68 ~~$19~~ In stock

Category: Astrophotography Accessories

Description

This is a 42 mm extension tube that adds 5 mm of length. The outside diameter is 1.8". The male thread is just under 3 mm long and the female thread is about 4.5 mm deep.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Samuel R. ★★★★★ Oct 21, 2026

The female threads gripped my camera body perfectly, with no wobble at all. This little 5mm tube let me dial in the exact spacing I needed for my planetary imaging setup.

Jason ★★★★★ Oct 20, 2026

The male threads threaded smoothly into my camera's T-ring without any wobble, and the 5mm length was perfect for dialing in my back focus. It feels solidly machined.

James Y. ★★★★★ Oct 18, 2026

I needed exactly 5mm more back focus for my planetary camera to reach focus with the reducer, and this tube threaded on smoothly with no wobble. The threads are nicely cut and the anodized finish looks durable.