All Guardian Angel Devices come with a built-in magnet which securely attach to any metallic surface. The Nonmetallic Surface 3M Adhesive & Screw Magnetic Mount easily attaches to any nonmetal surface, such as aluminum, fiberglass, plastic, rubber, wood, etc. Use this mount to easily attach your device to your motorcycle/scooter, boat, kayak or ATV, as well the mount can be attached to any tree or any semi-flat surface.