Feature: 1. Easy 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. 2. Aluminum 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. 3. Multiple 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. 4. Applicable Models: This extension tube is specially designed for Sony E mount lenses, allowing you to shoot at closer distances with higher magnification. 5. Product 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. Specification: Item Type: Macro Extension Tube Set Material: Plastic + Aluminum Alloy Product Color: As Pictures Shown Product Weight: Approx. 124g / 4.4oz Applicable Lens: Suitable for Sony E mount Lens Compatible Cameras: Suitable for Sony E mount Cameras, such as for Sony A7, A7R, A7S, A7II, A7RII, A7M2, A7SII, NEX-3, NEX-3N, NEX-3R, NEX-C3, NEX-F3K, NEX-5, NEX-5N, NEX-5A, NEX-5T, NEX-5C, NEX-5K, NEX-5R, A5000, A5100, A6000, A6300, A6400, A6500, A6600, A9, A7III, A7RIII, A7MIII. Package List: 1 x Macro Extension Tube1 x Manual Note: 1. Please allow 1‑3mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. When the image magnification ratio increases, the camera shake is easy to increase. It is recommended to use a tripod and shutter release appropriately.