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JOHNNY RAYJR-400HLP-M COMPLETE SWIVEL MOUNT ASSEMBLYMachined from durable 6/6 Nylon for corrosion resistance & long life. Features the JR-400 swivel mount top already installed w/HLP Plate & hardware & JR-300B swivel base. Simply locate your unit’s base onto the plate & drill the electronics pattern accordingly into the HLP Plate. Smaller Humminbird models like PiranhaMAX can be drilled & reverse bolted from underside to match Electronic hole pattern. Nuts and washers exposed at top.
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