The macro bellow stretch the distant between your lens and film to provides high quality close up images for you. Features: Macro bellow for manual focus cameras. Stretch the distance between your lens and film to provides high quality close up images for you. Give much high reproduction ratios(up to 11X by themselves, up to 22X with bellows extenders for the PB-6). With an accordion section to inserted between the lens and the camera body, maximum extension is about 130mm. Better to be used with a tripod which will allow you to adjust the distance smoothly and constantly. Specifications: Material: Plastic & Aluminum Alloy Compatible Model: for Canon EOS mount film SLR / DSLR camera Item Size: 14 * 10.7 * 6.3cm / 5.5 * 4.2 * 2.5in Item Weight: 210g / 7.4oz Package Size: 15.3 * 7.6 * 11.2cm / 6.0 * 3.0 * 4.4in Package Weight: 262g / 9.2oz Package List: 1 * Macro Bellow Note: Auto focus and aperture control are not retained when the bellows are in use.