This is a Photoflex convertible umbrella. By attaching or removing the black cover, it can be used as a translucent diffuser. Size: S 76cm (30 inches) Shaft diameter: 8mm This item was purchased new and has been stored for a long time with little use. It is generally clean, but there is a white spot as shown in photo 4. Please check the condition in the photos before purchasing. It will be shipped in a waterproof bag.