Explore the miniature world with the Automatic Extension Tube Set for FUJIFILM X-Mount lenses and cameras from Commlite. Included in the set is a 10 and 16mm tube with durable aluminum alloy mounts. Each tube shortens the minimum focusing distance of the lens, which is used for close-up or macro photography. Inside the mount are gold-plated contact pins that retain auto exposure and autofocus functions. TTL flash unit communication is also supported. The tubes may be used individually or combined for increased magnification.