Kenko DG Extension Tube Set for Canon EF/EF-S lens mount_Sony E there's a bit of flex

there's a bit of flex in the legs that might get worrisome with really big stuff

Prakticar 2X Automatic Teleconverter Lens for the Praktica Electronic SLR mount

It has autofocus capabilities for compatible Pentax cameras

5 inches is for use with black and white enlargers

with shoulder strap and carry handle

Kenko DG Extension Tube Set for Canon EF/EF-S lens mount_Sony E there's a bit of flexA set of three extension tubes for Canon EF EF S mount: 12mm, 20mm, and 36mm. These tubes have the electronic contacts necessary to maintain autofocus and autoexposure capabilities. If you're curious about dabbling in macro work, this is an inexpensive way to get started.