The copper core HX-CU720H provides an approximate 700W of added heat dissipation when coupled with two 120mm fans. Offers excellent performance with low air flow. Horizontal (parallel) G 1/4 BSP threaded nozzle sockets, nozzles not included. 32mm (1.26") long mounting screws are included. Dual pass, brass pipes, 15mm (0.59") fan hole spacing. Overall dimensions 5" x 1.7" x 11.8".