LED specialty fittings provide focused LED illumination for your coolant, while minimizing external lighting. LED specialty fittings come in a couple of different forms. Some are simple acrylic plugs with a recess machined out of them to use to install your own LED. These same plugs are also available with different LEDs preinstalled. Another type is a sleeve ring that slides over rigid tubing and illuminates it from within. While these offer the advantages of not actually touching your coolant and compact 3-pin power, they are size specific so be sure to buy the correct size for your system. LED specialty fittings from TITAN RIG can give your water cooling loop the special touch needed in a truly custom build.