3187 Stainless Steel Ratchet Mount Similar in design and appearance to the current 4187 mounts, the 3187 Stainless Steel Ratchet Mount is a versatile, free-standing mount with a four-way ratchet design. It can be used for mounting to vertical or horizontal surfaces (deck or bulkhead) and adjusted to a slanted surface. Quick action release handle- easily raise lower antennaStandard 1″ – 14 threadsCable slot for easy installationMatches 4187 bolt hole footprintInstallation hardware not supplied.