Ring (extension / extender) T2 / T2 with a length of 7.4 mm (5 g), used in the case of differences in optical paths between the right camera (photographing) and guiding in OAG , and also whenever we want to extend the optical path through T2 threads while maintaining high stiffness and axiality. • optical length: 7.4 - 7.5 mm (depending on the twisting force) • fixing: T2 on both sides (1 x male, 1x female) • weight: 5 g


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