Plastic AF Autofocus Automatic Macro Extension Tube Ring Set for CanonEOS EF EFS mount
The set is consist of three tubes of different length, which can be used in any combination or individually to obtain the different magnification.
This Autofocus Extension Tube set provides 3 extension tubes that can be added between the camera and the lens, to make the lens focus at closer distances and produce higher magnification. Extension tubes are tubes with a rear-lens mount at one end and a camera-body mount at the other end.
This Extension tube set does not affect image quality as there is no optics inside. In comparison, a close up filters are often blamed for degrading image quality. It moves the lens farther from the film or digital sensor.