Polaroid Auto Focus DG Macro Extension Tube Set For Nikon Digital SLR Cameras

The Extension Tubes Enable Your Lens To Focus Closer Than Its Normal Minimum Focusing Distance Resulting In The Magnification Of The SubjectIncludes Electrial Contacts To Maintain Auto Focus And Auto Exposure CapabilitiesTube Sizes: 12mm, 20mm, 36mm
Product DescriptionPolaroid Auto Focus DG Macro Extension Tubes are designed to enable your lens to focus closer than its normal set minimum focusing distance, this way you can magnify your subject. The tubes are very useful for macro

Source: Digital Camera and Video Store...