ET050 2" Extension Tube - Extends 50 mm

Name: ET050 2" Extension Tube - Extends 50 mm
Brand: Stellarvue
SKU: ET050
Price: 12.38 USD
Availability: InStock
Rating: 4.6 (5 reviews)

ET050 2" Extension Tube - Extends 50 mm - Main image

ET050 2" Extension Tube - Extends 50 mm - View 2

$12.38 ~~$19.96~~ In stock

Category: Part

Provides 50 mm of additional focus travel to the rear. This is a 2" diameter compression ring extension tube. It has a 2" filter thread on the insert tube (M48 X .75).

Width:: 6.00 (in)
Height:: 6.00 (in)
Depth:: 4.00 (in)

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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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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 (4.6 / 5 · 5 reviews)

Chloe ★★★★★ Oct 21, 2026

Finally, a 2" extension tube that doesn't wobble or feel cheap. The M48 thread on the insert is machined precisely enough that my filter screws on without any binding. I needed exactly 50mm of extra focus travel for a macro project and this solves it perfectly.

Olivia N. ★★★★★ Oct 18, 2026

The M48 x .75 threads on the insert tube are machined cleanly, so screwing it onto my focuser took zero effort. Gives me that extra 50mm of rear travel I needed without any wobble once locked down.

Charlotte S. ★★★★★ Oct 18, 2026

Finally found a solid 2" extension that doesn't wobble—the compression ring locks down tight, and the M48 thread on the insert is machined clean. Adds exactly 50mm of rear travel, which solved my back-focus issue perfectly.