Made of anodized aluminum with a black finish. The length of this helicoid tube ranges from 25mm (minimum) to 55mm (maximum), providing a movement distance of 30mm for lens focusing. It is compatible with M65 screw mount lenses, as well as 65mm screw mount lenses and enlarger lenses. This helicoid tube is ideal for lenses without a focus ring, offering fine focus control for macro photography. It can also be used as a macro barrel. Automatic diaphragm and auto-focusing may not function properly when using this adapter. Manual focusing with mode metering is supported with the adapter. Compatible With: M65 Lens & Camera Colour: black Material: metal Package Contents: 1 x M65 to M65 Mount Lens Adjustable Focusing Helicoid Macro Tube Adapter - 25mm to 55mm Only the above package content is included, other items are not included. Note: Light and different displays may cause the color of the item to vary a little from the real thing. The measurement allowed error is +/- 1-3cm.