Automatic extension tubes 12/20 / 36mm, for macro photography to match Nikon D7000, D5200, D5100, D5000, D3200, D3100, D3000, D800, D700, D600, D300, D300, D200, D90, D80, D70, D70s, D60, D50 D40, D40x, D3 Series, Series D2, D1 Series *** contact area of metal !! (Electronics)
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