The water blocks directly cools power regulation (VRM / MOSFETs) module while the heat sink cools Intel X99 southbridge (PCH) chip. Please note this water block cools exactly as much heat generating components as GIGABYTE factory cooling solution. It is a high flow water block that can be easily used with systems using weaker water pumps. Base of the waterblock is made of nickel plated electrolytic copper while the top is made of quality acrylic material. The sealing is performed by quality rubber gaskets. Water block is mounted with enclosed M2.5×4 DIN7985 and M3x4 DIN7991 screws and PVC washers. The 2.5mm nickel plated brass screw-in standoffs are already preinstalled and allow for easy installation. Enclosed thermal pad is used on voltage regulator module to improve cooling performance of the waterblock. On the southbridge please use any electrically non-conductive thermal grease, e.g. Gelid GC-Extreme or EK-TIM Ectotherm. Enclosed: – water block (MOSFET) – heatsink (SB) – mounting mechanism – thermal pads Fittings are not enclosed! Two fittings are needed to make this waterblock to operate properly. All EK-CSQ fittings are compatible with this water block! Made in Slovenia – Europe!