EK-FB KIT EVGA X58 is a complete solution for EVGA X58 3SLI motherboard watercooling of chipset and Mosfets (power regulators). Base is made of electrolytic copper. Top is made of quality POM Acetal material. The sealing is preformed by quality rubber washer. Block are mounted with enclosed M3 screws with PVC and Metal washers. Thermal pad is used for better contact of Mosfet chips. For NB+SB block please use any none-electrical conductive thermal grease.