Zeikos ZE-CVAFN Auto Focus Macro Extension Tubes for Nikon
The Zeikos ZE-CVAFN Auto Focus Macro Extension Tubes are perfect for taking photos of flowers, bugs, coins, and any other close-up objects that you want. 3 tubes are provided (13mm, 21mm & 31mm). They can be used individually or in combination to obtain the desired effect. they are compatible with Nikon DSLR's or Film cameras.