Feature: 1. Application: This adapter tube thread M42x0.75 is suitable for T2 mount lens of camera, and T2 adapter ring to mirrorless camera for Fujifilm. 2. Height Adjusting Valve: The height of eyepiece can be adjusted from 67mm to 80mm. Diameter regulating valve, the diameter of eyepiece can be adjusted from 41.5mm to 44.5mm. 3. Hollow Design: This T2 adapter ring tube adopts hollow design, which does not affect the focusing wheel and the adjustment of the focusing hand wheel on both sides. 4. Scope of Use: This adapter tube is equipped with adapter ring, applicable for Fujifilm FX mirrorless camera, which is helpful for visual photography. 5. Aluminum Alloy: This photographic accessory is simple, practical and easy to install, made of aluminum alloy and can be used for a long time. Specification: Item Type: Spotting Scope Camera Adapter Tube Material: Aluminum Alloy Gross Weight: 237g / 8.4oz Thread: M42x0.75 Height Regulating Valve: adjustable eyepiece height: Approx.67-80mm / 2.6-3.1in Diameter Regulating Valve: adjustable eyepiece diameter: Approx.41.5-44.5mm / 1.6-1.8in Scope of Application: for Fujifilm FX mirrorless camera. Package List: 1 x Tube1 x Adapter Ring 1 x Wrench