Derale Hyper-Cool Extreme remote fluid coolers feature a highly efficient 40-row stacked plate core that is pressure tested to 250 psi. They have a powerful 150-watt waterproof and dustproof 800 cfm electric fan installed directly to them by using the included clear anodized aluminum shroud. The shroud also acts as their mounting bracket for quick easy installation. Derale Performance Hyper-Cool Extreme remote fluid coolers with fan are equipped with male threaded -6AN ends.