Super slim, ultra thin, only 1-1.5mm thickness, very easy to use. Make M42 Mount Lens to be used on NEX E Mount System Cameras. It is possible to use Macro rings and other accessories. Made of Anodized aluminum alloy, very strong and This Lens Adapter Ring M42-NEX for M42 Lens NEX E Mount body NEX-3 NEX-5 NEX-5C NEX-5R NEX6 NEX-7 NEX-VG10, and etc. Material: Aluminum alloy Color: Black Suitability: For M42 Mounts Lens, NEX E Mount NEX-3 NEX-5 NEX-5C NEX-5R NEX6 NEX-7 NEX-VG10, and etc Note: When attaching this adapter ring to NEX camera, it is unable for close-up , you need to add extra focusing tubes Package List: 1 * Lens Adapter Ring Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.