About this item

• Extension tube provides extra focuser "back travel" often needed for short-range terrestrial viewing through a telescope, or for astrophotographic applications
• Adds 2" of extension, fits in 2" telescope focusers, and accepts 2" eyepieces or accessories
• Features two locking thumbscrews to secure any inserted astronomy accessory
• Threaded for use with 2" Orion eyepiece and astrophotography filters
• Machined and anodized aluminum tube