1Easy to Install and Use: Easy to install and remove, the macro extension tube adapter ring is installed between the camera and the lens, with electronic contacts, it can be quickly locked, supports autofocus, and is simple to use. 2Aluminum Alloy: The bayonet part is made of high quality aluminum alloy metal material, it has fine workmanship, sturdiness and durability, and not easy to wear. 3Multiple Methods of Use: The Macro extension tube set includes a 10mm, a 16mm and a 21mm single adapter ring. The three rings can be used alone or in combination. After being installed, the shortest focusing distance of the lens can be reduced to achieve a local macro effect. 4Applicable Models: This extension tube is specially designed for E mount lenses, allowing you to shoot at closer distances with higher magnification. 5Product Features: The macro extension tube is an effective accessory for macro photography, allowing you to easily take close up shots of small objects such as insects and flowers. Allows you to convert almost any lens into a micro lens at very little cost while maintaining its original optical quality.