RAM® Handlebar U-Bolt Mount for Garmin Astro 320, GPSMAP 62 & 64 Serie – RAM Mounts
Garmin Gps Astro 220 320 430 Protective Cover Heavy Duty Flexible Silicone Case | eBay
Amazon.com: RAM Mounts Handlebar U-Bolt Mount for Garmin Astro 320, GPSMAP 62 & 64 Series RAM-B-149Z-GA41U with Medium Arm for Motorcycle, ATV/UTV, Bike : Everything Else