Neewer&reg; Chrome-plated Copper Metal Lens Mount Replacement for Sony NEX E-mount APS-C and Full Frame Cameras Such as A7/A7S/A7R/A7II/A6000/NEX-3/NEX-5/NEX-3C/NEX-5N/NEX-7/NEX-F3/NEX-5R/NEX6(Silver) Strict process of bayonet precision machining for snug fitting to your Sony NEX E-mount camera. Solid built,made of chrome-plated copper for better durability. The feeling of wobbling lens will be minimized to give you a sturdier control. 3 times the longevity of the original plastic mount. Easy to install and dismount.Push your camera to a higher standard of quatlity in few minutes!