OPT 35mm Extension Tube - 2"

OPT 35mm Extension Tube - 2"
Item # OS-E235
  • The OPT Extension Tube fits a 2" barrel and measures 35mm (1.38") long.
  • Utilizes a brass compression ring fitting instead of a set screw.
  • The OPT Extension Tube won't mar your good eyepieces and accessories!
  • Adds additional focal travel.


OPT - 35mm Extension Tube - 2"

Have you ever wished for just a little more focal travel for that certain eyepiece or optical accessory? Have you ever needed to pull the barrel out to the very end of the focuser and been a little worried it wouldn't hold? Worry no more. OPT has the answer...

With the OPT 35mm Extension Tube you can get another 1.38" of "space travel" out of any focuser. This 2" accessory utilizes a non-marring brass compression ring fitting to securely lock your eyepieces or accessories into place, then fits into the focuser or diagonal.

OPT Product Number: OS-E235
Additional Information

Additional Information

Manufacturer OPT

Customer Reviews 1 item(s)

OPT 2 35mm Ext Tube
This is a great 2 Ext tube of 35mm of Ext, the quality of the metal is very good and the finish is as well, the only thing is the commpression ring was not in it's slot not a big deal..

From OPT and the price $20 A MUST BUY if you need 2 ext tube.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Christopher / (Posted on 8/1/2008)
Included Items

Included Items

  • OPT - 35mm Extension Tube - 2"
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