Savage Macro Art variable auto-extension tube is an exclusive accessory for DSLR macro photography that combines the three most common automatic extension tubes into one integrated range. Conveniently adjust magnification strength without changing tubes, to proficiently capture fine detail with ease. Works with Canon EF/EF-S Series Lenses and Nikon AF Series Lenses. Works well with the Macro Art Adjustable Dual Arm LED Light accessory.