Features:Adapter for M42 Lens to SONY NEX E-mount camera.It allows focus to infinity.Install， remove and operate lens smoothly.Super smooth surface finishing and made of metal，sturdy enough.Specifications: Material: MetalSuitable: for M42 Lens to Sony NEX mount cameraColor: BlackItem size: Approx. 5.8 * 3.2cm / 2.3 * 1.3inItem weight: Approx. 66g / 2.3ozPackage size: Approx.6.8 * 6.8 * 3.5cm / 2.7 * 2.7 * 1.4inPackage weight: Approx. 72g / 2.5ozPackage List:1 * M42 adapter ringNoteAlthough the lens will fit physically，automatic diaphragm，auto-focusing， or any other function will not operate correctly while using this adapter."
