M68 EXTENSION TUBE - 9mm Visual It is made of two

It is made of two standard 3" Losmandy plates and includes three plastic screws at each end for easy and accurate alignment of the guide scope

2 security locking knobs

RJ11 4 pins / USB

This accessory increase the optical path of your telescope of 80mm

M68 EXTENSION TUBE - 9mm Visual It is made of twoThis 9mm M68 extension tube features a male M68 x 1 thread on one end and a female M68 x 1 thread on the other. This is a very useful accessory for making up the exact backfocus distance required by correctors. Specifications Connection side A Male M68 x 1 Connection side B Female M68 x 1 Optical length 9 mm SKU AX M68 EXT9