Extension tubes are a perfect solution to allow ultra close focusing without sacrificing the optical properties of your lens. ProMaster Macro Automatic Extension Tubes are engineered for a precise fit and proper communications between your camera lens and body. ProMaster 8805 Automatic Extension Tube Set for Sony E mountcameras includes two tubes that can be used individually or in combination to gain the right magnification for your particular need.Set includes 10mm and 16mm tubes in a neoprene storage pouch along with protective caps.