Monsoon Modular Reservoir SystemMonsoon\'s new Modular Reservoir System allows you to configure exactly the reservoir you need for your buildno more forcing your build to fit around an off the shelf, one-size-fits-all reservoir. All of the components are sold separately allowing you to mix and match different end caps, couplers, tension rods, tube lengths, mounting options, fill and drain ports, pump options, and lighting.Because the system is FULLY modular and every component is sold separately, you only buy the components you need for the reservoir you actually want for your dream rig. This saves you money now and down the road when you\'re upgrading your cooling loop or reusing the reservoir in a new buildjust add the few components you need for the new build without buying an entirely new reservoir.Assembly is straight forward and all the components are made of top quality materials with excellent fit and finish. Check out the how-to video links below for an overview of MMRS and videos on using the different components. Unleash your creativity and set your imagination free with MMRS.MMRS-CCFL-XXX-XXThis 44mm diameter DRILL BIT is used for drilling the large hole required to mount an external Fill or Drain Port End Cap using part numbers MMRS-FDP-RC-XX, MMRS-FDP-SC-XX. MMRS-FDP-RCS-XX, or MMRS-FDP-SCS-XX where XX is a place holder for the color codeRD for red as an example.It is the fastest, cleanest way to drill this hole in cases made from aluminum, wood, plastic, etc. Not recommended for steel cases.Be sure to watch our how-to assembly videos below for more information on how and where to use this part in your reservoir build.