1,Main Function: Macro bellow is an accessory connected between the fuselage and the photographic lens. Its function is to widen the distance between the main point of the lens and the focal plane, so as to achieve the purpose of magnifying photography. 2,Use with Tripod: Macro extension bellow is used in conjunction with a tripod, which is stable and easy to use, enabling you to smoothly and continuously adjust the distance to the object you want to shoot. 3,An Accordion Style Section: Macro extension bellow tube is an accordion style section that is inserted between the lens and the camera body. 4,Take Finer Pictures: Macro lens extension bellow tube can perfectly replace the automatic close up adapter, and even take finer pictures than it. 5,Application and Size: Macro bellow is compatible with R mount cameras. Maximum working size is 144mm or 7in, minimum working size is 37mm or 5in. 1 x Macro Bellow1 x Screw Item Type: Macro BellowMaterial: Zinc AlloyColor: As Pictures ShownWeight: Approx. 421g or 14.9ozMaximum Working Size: Approx. 144mm or 5.7inMinimum Working Size: Approx. 37mm or 1.5inApplication: Compatible with R Mount Cameras Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.