What's in the box:

Auto Focus Lens Mount Adapter Ring Extension Tube Replacement for Canon EF EF-S Lens to Canon EOS M2 M3 M5 M6 M10 M50 M100 M-Mount Cameras (Standard)

Features:
Lens mount adapter ring replacement for Canon EF/ EF-S series lenses to EOS-M cameras.
The lens mount adapter ring can increase compatible lens choices for your camera, very practical.
Supports automatic focus function, providing your with better shooting performance.
High precision contact points, stable signal transmission, and easy to install with the red dot.
With 1/4 inch screw hole at the bottom, can be installed on the tripod or other fixed bracket easily.

Specifications:
Color: Black
Material: Plastic + Metal
Focus Mode: Auto Focus
Screw Hole: 1/4 inch
Item Size: 7.2 * 6.8 * 3cm/ 2.8 * 2.7 * 1.2in
Item Weight: 56g/ 2oz(excluding caps)
Package Size: 8 * 8 * 5cm/ 3.1 * 1.2 * 2in
Package Weight: 106g/ 3.7oz

Package List:
1 * Lens Mount Adapter with caps