Nikon Extension Tube M2 Non AI

Extension Tube M2 provides an easy way to compose, focus and meter at the brightest, fullest aperture. Extension Tube M gives 27.5mm extension. It does not preserve any automatic features.  This set is recommended for Nikon F mount/Pre-AI (Non-AI) lenses over 55mm. It provides continuous focusing from 1:2 to 1:1 reproduction.