Extension tube for Minolta MD : The more tubes you add, the closer the focus and ... tube. (Third-party) Macro Extension Tube Set for Minolta MC/MD lens SLR cameras; Compatible camera models: SR Series: SR-7 ... , Auto-Rokkor, MC Rokkor, MC Rokkor-X, MD Rokkor-X, MD Minolta, MC Celtic and MD Celtic lenses with aperture control ring; 5 ... metal (not plastic); Black in color; Extension tube for Minolta MD