Store › Sea Brackets 5/16" Backing Disk f/Garmin Kraken Mounts - 2-Pack [SEA2327] Sea Brackets 5/16" Backing Disk f/Garmin Kraken Mounts - 2-Pack [SEA2327] $11.99 5/16" Backing Disk for Garmin Kraken Mounts - 2-PackSpecifications: Size: 5/16" Backing Disk Specifically for Kraken Mount 2-Pack Add To Cart Added! 5/16" Backing Disk for Garmin Kraken Mounts - 2-PackSpecifications: Size: 5/16" Backing Disk Specifically for Kraken Mount 2-Pack