Bert's Custom Tackle Walker Downriggers Drilled Gimbal Mount for Fishing Rods, 13-Inch

["GIMBAL MOUNT REPLACEMENT: Converts standard flush-mount rod holders into a sturdy, temporary mounting base for your downriggers.","NO DRILLING REQUIRED: Perfect for boats where drilling permanent deck plates is not an option; slips easily into existing rod holders.","13-INCH LENGTH: Long tube seats deeply into the rod holder, ensuring exceptional stability and leverage against heavy cannonballs.","HEAVY-DUTY CONSTRUCTION: Manufactured from thick, marine-grade metal to withstand the extreme torque of deep trolling.","PRE-DRILLED BASE: Top plate is pre-drilled to match Walker downrigger bases for an immediate, hassle-free setup."]