New 1.25" Filter thread extension tube and barrel 20mm 25mm for telescopes

1.25" Filter thread extension tube and barrel 20mm 25mm for telescopes

Product Feature:

This adapter proved very important within many fields of the astronomy. The extension tube becomes simple screwed into the filter thread of 1,25" Eyepieces or 1,25" Adapter and extends thus by 20mm 25mm.

At the telescope side you can screw a filter or adapt even a further extension tube. So you can extend the connector socket, without wobble.

 1.25" extension tube

Outer Diameter:1.25"

Over Length:20mm 25mm

At the end of the adapter is threaded to accept standard 1.25" filters. (male and female thread both are 28.5*0.6 MM to connect to 1.25" filter)

The inside of the adapter is fully threaded to minimize reflections.

full metal-----Aluminum alloy

pls note:this item not including the 0.5X focal reducer lens,it just show the useway of this adapter,

if you need the 0.5X reducer lens,pls bid visite our store and search 0.5x

High quality and bid it confident.

Directed from factory,welcome wholesaler!!