Bresser
Extension tube 25mm 2.5" Hexafoc
$ 19.90
ready for shipping in 1-2
weeks
ASToptics
Extension tube M68 fine tuning ring - 1mm (aluminium)
$ 15.90
ready for shipping in 1-2
weeks
TS Optics
Extension tube M68 40mm
$ 63.00
ready for shipping in 3-7
days
TS Optics
Extension tube M68 extender, 5mm total optical path
RRP:
$ 54.00
Our price:
$ 49.90
ready for shipping in 3-7
days
Bresser
Extension tube 37.5mm 2.5" Hexafoc
$ 21.90
ready for shipping in 24
h
ASToptics
Extension tube M68 fine tuning ring - 0.5mm (aluminium)
$ 12.90
ready for shipping in 1-2
weeks
ASToptics
Extension tube M68 fine tuning ring - 0.3mm (aluminium)
$ 16.90
ready for shipping in 1-2
weeks
TS Optics
Extension tube M68 15mm
$ 55.00
ready for shipping in 3-7
days
TS Optics
Extension tube M68 extender, 8mm overall optical path
$ 51.00
ready for shipping in 3-7
days
Starlight Instruments
Extension adding 2.25 inches to overall length
RRP:
$ 400.00
Our price:
$ 293.00
ready for shipping in 3-6
months
Baader
Extension tube M68 VariLock 15-20 mm
$ 157.00
ready for shipping in 1-2
weeks