1、M48*0.75mm thread adopt double layers structure of inner ring and outer ring, use 3 screw to fix the adapter ring, convenient to adjust camera angle. 2、Made of quality aluminium alloy material, anti-deformation, high strength, anti-rust. 3、Fine workmanship, smooth surface, will not scratch your equipment. 4、Supports manual focus and manual adjust aperture. 5、Suitable for Nikon F SLR cameras and telescope eyepieces with 2-inch eyepiece ports. Features: 1.M48* 0.75mm thread adopt double layers structure of inner ring and outer ring, use 3 screw to fix the adapter ring, convenient to adjust camera angle. 2.Made of quality aluminium alloy material, anti-deformation, high strength, anti-rust. 3.Fine workmanship, smooth surface, will not scratch your equipment. 4.Supports manual focus and manual adjust aperture. 5.Suitable for Nikon F SLR cameras and telescope eyepieces with 2-inch eyepiece ports. Specifications: Material: Aluminium alloy Color: black Port size: 1.25in Port: for Nikon AI port Thread: M48* 0.75mm Fit for D4, D4s, D3x, D3s, D3, D810, D800, D750, D700, D610, D600, D300S, D300, D200, D100, D7200, D7100, D7000, D5500, D5300,D5200, D5100, D5000, D3300, D3200, D3100, D3000, D90, D80, D70 camera. Packing List: 1*Adapter 1*2 inch telescope adapter