CM012+GN014-SPH+APTTGO520: Deluxe Non-Skid/Friction Style Weighted Dash Mount with Safety Hook for TomTom GO 520 530 720 730 920 930 Edition GPS Weighted Non-Skid Mount is compatible with TomTom GO 520 530 720 730 920 930 Editions Innovative design includes optional adhesive safety hook that attaches to loop on dash mount Anti-skid material on base prevents movement of mount The perfect alternative mount for California and Minnesota drivers where windshield mounts are banned U-Shaped rim design more optimal than fully enclosed Non-Skid mounts as it allows you to lower the windshield pedestal for optimal viewing