1. Functional Design: Provides extra focusing distance to increase focal length extension. Sometimes necessary for certain eyepiece or telescope camera combinations for focusing.
2. Extended Focusing Needed: Often requires more focusing distance when observing short distances on the ground with a telescope or using field flatteners, correctors, or reducer lenses.
3. Secure Connection: Equipped with 2 fixed screws to support connecting 2 inch telescope eyepieces and astrophotography filters, preventing damage to telescope accessories.
4. Universal Compatibility: Features front end with M48x0.75mm thread for use with 2 inch telescope eyepieces and astrophotography filters, ensuring a secure fit.
5. Sturdy Construction: Anodized black finish prevents unnecessary reflections. Made of solid aluminum alloy material for strength, durability.

Specification:
Item Type: Eyepiece Extension Tube
Material: Aluminum Alloy + Copper
Interface Size: Approx. 2 inches /50.8mm
Thread Size: M48x0.75mm
Color: Black

packing list:
1 x Extension Tube