Deep Blue Marine 21 x 12" Bait Table/Filet Board [MSK-1]21 x 12" Bait Table Filet Board The Next Generation in Rod Holder Accessories The Interchangeable Deep Blue MultiSystem. The only multiple use rod holder accessory system available! One MSR Swivel Mount is all you need to hold many different accessories in any rod holder at any angle. Simple to use, no tools are required to change products. Change your bait board to a food tray in seconds or refill your reel quickly and easily. Saves money, saves 50%