Material of Macro Tube: The part of camera mount and lens mount are both made of high quality brass, while the tube is made of high quality ABS plastic
Function of Macro Tube: Shortens minimum focusing distance of lens for macro photography, convert almost any lens into a macro lens, save your cost of buying an expensive macro lens
Extension Tube Set: Extension tubes of 12mm, 20mm and 36mm lengths can be used individually or in any combination of the three for greater magnification
Wired Remote: 2.3 ft (70cm) long camera connection cable + 4.3 ft (130cm) long extension cable. Handy for taking pictures of subjects that are difficult to approach
Remote Function: Controls autofocus and shutter triggering, Capture images without shaking camera. Ideal for bulb exposures, super telephoto shots and macro photography