ASToptics
Extension tube M48 (2") fine tuning ring - 0.3mm (aluminium)
$ 6.90
ready for shipping in 24
h
TS Optics
Extension tube Fine tuning ring for M48 0.3mm
$ 14.90
ready for shipping in 3-7
days
Baader
Extension tube Fine tuning ring for M48 0.3mm
$ 8.90
ready for shipping in 1-2
weeks
Baader
Extension tube Fine-Adjustment Rings T2 0.3mm
$ 8.90
ready for shipping in 1-2
weeks