Nikon Extension Tube Set PK-11, PK-12, PK-13

Nikon extension tube set for macro photography comprises three tubes: PK-11 8mm PK-12 14mm and PK-13 27.5mm. These can be used individually or in any combination giving seven different magnification options - All three together, all three individually or PK-11 and PK-12, PK-11 and PK13, PK-12 and PK-13.