
ASToptics
Extension tube M48 (2") fine tuning ring - 0.3mm (aluminium)
$ 11.93
ready for shipping in 1-2
weeks

TS Optics
Extension tube Fine-tuning ring for M48 0.3mm
$ 20.96
ready for shipping in 3-7
days

Baader
Extension tube Fine-tuning ring for M48 0.3mm
$ 15.94
ready for shipping in 1-2
weeks

Baader
Extension tube Fine-Adjustment Rings T2 0.3mm
$ 15.94
ready for shipping in 1-2
weeks