1Mechanical finish machining workmanship, surface frosted electroplating treatment, with glossy, harden black baking paint, not easy to scratch paint._x000D_ 2Internal has protection pad, will not scratch lens body._x000D_ 3Suitable for SIGMA four generation APO 70200mm F8 II EX DG lens._x000D_ 4Lens fixed on tripod, can easily rotated in all directions to meet shooting needs._x000D_ 5Made of high quality aluminium alloy material, sturdy, durable and long service life. 1 x Lens MountRing Condition: 100% NewItem Type: Lens Mount RingMaterial: Aluminium AlloyColor: BlackFitment: For SIGMA Four Generation APO 70-200mm F 2.8 II EX DG LensQuantity: 1PCSInstall: Insert from Back of the Lens, Tighten ScrewsWeight: Approx. 157gInner Diameter: Approx. 67mm/ 2.64inchCircle Inner Diameter: Approx. 71mm/ 2.80inchCircle Width: Approx. 18mm/ 0.71inchCircle Thickness: Approx. 4mm/ 0.16inch