1Aluminum Material: The mount part is made of of high quality aluminum alloy metal material, with quality workman for wear resistance and durability. 2Easy to Use: Easy to install and remove, also able to achieve fast locking, safe and less trouble for use. 33 in 1: Consist of a 10mm, a 16mm and a 21mm separate extension ring, 3 connecting ring can be used both alone and together, able to reduce the lens shortest focusing distance after installation, to achieve local macro effect. 4Auto Focus Function: Easy to use, macro extension tube ring is installed between camera and lens, with electronic contact, supporting auto focus. 5Powerful Tool: Macro extension tube is a macro photographic valid accessory that can easily shoot a fine object, such as insects, a close up of floral. Your lens can be converted to a macro lens at a very small cost while maintaining its original image quality. Item Type: Macro Extension Tube Material: Plastic + Aluminum Alloy Color: As Shown Application Camera: For EOS-M Mount Camera, Such As M6 M2 M3 M5 M50 M100 M200 Application Lens: For EOS-M Mount Lens Weight: Approx.122g/4.3oz 1 x Macro Lens AdapterSet (10mm+16mm+21mm) 1 x Manual 1. Please allow 13cm 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, so it is recommended to use the tripod and shutter release properly.