Description: Suitable for 1.25 inch telescope eyepiece. All-metal precision turning, for a variety of filter interface digital camera connected to 1.25-inch telescope eyepiece, or similar to the size of the telescope eyepiece photography. Allows you to quickly attach your DSLR camera to 1.25" telescope eyepieces. Diameter 34.5 mm, please make sure your telescope eyepiece is not greater than this number. Whole metal construction and anodizing aluminium process outface. Specification: Material: Metal Maximum Diameter:40 mm Inner Diameter:28mm Height:27mm Fit for 1.25"Telescope Eyepiece Package Includes: 1 Piece Camera Adapter Ring 28mm