Excellent price for quality extension tubes. Worked marvelously with my Sony a7iii, best for close-up scenarios. I also got a Wimberley bracket and macro ring-light, Jonathan and John were helpful, congenial and encyclopedic in all aspects of photography. Wonderful service and quick delivery. I can always call if I need more information 42PHOTO gives excellent service. I always choose them for my photography gear, lenses or accessories needs.