Neewer 12mm,20mm,36mm AF auto Focus ABS Extension Tubes Set for Nikon DSLR Cameras Such as D7200,D7100,D7000,D5300,D5200,D5100,D5000,D3300 A good alternative to macro lenses for amateur and professional photographers who want to try macro shooting. Supports auto focus through electronic contacts that of good quality to get a better linkage with camera and less difficulties in focusing when doing macro shooting. Compitable with Nikon lens series: Nikon SLR and Nikon AF, AF-S, D, G and VR lens series, Nikon DSLR Camera D5300, D5000, D3000, D3200, D5100, D5200, D3100, D7000, D7100, D4, D800, D800E, D600, D610, D40, D40x, D50, D60, D70, D80, D90, D100, D200, D300, D3, D3S, D700 Three tubes(12mm,20mm,36mm) to get 7 combinations for different degree of magnification! Easy to use, simple to mount and dismount by quick release lock.