. Features:You can use the FD Lens To for Nikon AI CameraLens lock / release and stop screwIt isn'for t able to for focus for infinity, no glass , just for macro shootingAuto for focus (for AF) is not availableMade of Brass and AluminumLens mount adapter only, other accessories demo in the picture is not includedSuitable for Cameras:For All for Nikon AI mount cameraFor Nikon Df, D5300, D610, D7100, D5200, D600, D3200, D800/D800E, D4, D5100, D7000, D3100, D300S, D3000, D3X, D90, D700Suitable for Lens: All FD lens. Specification:Item Name: Lens mount adapterMaterial: Aluminium alloy/BrassShape: RoundType: Extension TubesCamera/Camcorder Fitting: for Nikon AI mount cameraLens Fitting: FD lensSize: Outer Diameter: 6.5cm/2.56'Inner Diameter: 4cm/1.57'Color: Black+SilverQuantity: 1 PcNote: 1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes:1 x Lens mount adapter (without retail package)