T2 (M42x0.75) Extension Tube M42 to M42 Length 3mm 5mm 7mm 10mm 12mm 15mm 20mm 30mm
6.82$
6.82$
Quantity:
1
Availability:
caliber
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Description:
1. The function of the extension tube is to increase the distance between the lens and the camera. It has a T2 interior thread and a T2 exterior thread for solving spacing problems in astrophotography and eliminates a range of focusing problems.
2. Fully metal construction and anodizing aluminum process, durable for long time use.
3. Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners.
Specification:
Length for choosing :3mm / 5mm / 7mm / 10mm / 12mm / 15mm / 20mm / 30mm
Material: Aluminum alloy
Internal thread: M42 x 0.75mm
External thread: M42 x 0.75mm
Color: black
Package includes:
1 x Telescope Photography T2 (M42x0.75) Extension Tube
Customer Reviews
131 ratings
fast delivery (8)
perfect (6)
reliable brand (4)
well-made (3)
satisfactory (3)
perfect fit (2)
Customer photos (7)
Buyer from United States
May 20, 2026
Variant: caliber:30mm
Fast delivery, as described.
A***r
January 16, 2026
Variant: caliber:3mm
A little flimsier than I thought it should be. Otherwise it works perectly. For 3mm or less, maybe making too tight is a bad idea, because it would be difficult to unscrew. Last miles tracking is in complete mess for a month or so, and there is no way of telling when item will be received. Do not anticipate delivery upon 'out for delivery' notification.
Buyer from United States
December 16, 2025
Variant: caliber:15mm
good product, works as advertised
Buyer from Chile
September 26, 2026
Variant: caliber:10mm
it works well, the only thing that i would say is a little bad is that the thread to the camera mount is a little thin so i wouldn't trust it with heavy lenses, other than that it's good
Buyer from Italy
September 14, 2026
Variant: caliber:3mm
perfect, as described
Buyer from Italy
September 14, 2026
Variant: caliber:12mm
perfect as described
T2 (M42x0.75) Extension Tube M42 to M42 Length 3mm 5mm 7mm 10mm 12mm 15mm 20mm 30mm
6.82$
6.82$
Quantity:
1
Availability:
caliber
