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.