Mounting your compatible Garmin Handheld has never been easier with the Garmin Marine Mount! Compatible with many Garmin Handheld GPS units including the Astro 320/430/900, Colorado, Dakota, Oregon and Rino series as well as the Alpha 100, eTrex 10/20/30/Touch units, GPSMAP 64/66 series and inReach Explorer + and Mini Satellite Communicators.(screws not included).