TWO pieces rectangular metal plates with 3m Backing adhesive for GizMount Mount. Compatible with all versions of GizMounts as well as most magnetic phone mounts. Effortless quick snap and remove mounting action， innovative and seamless. Sticks onto any flat surface (rear of smartphone， or case of smartphone) with 3M tape. Requires original GizMount Mount or comparable Magnetic phone mount Metal plate for Gizmount and other Magnetic Phone Mounts