ekwb ek quantum surface p120mThe EK Quantum P Series surface coolers are absolute all rounders for low noise and high performance. With four G1 4" threaded connections and sixteen 2mm wide copper tubes, they ensure optimal cooling. Thickness: 44 mm Four G1 4" threaded connections Fifth G1 4" connection on end reservoir Sixteen 2mm wide copper tubes High quality copper fins with 18 FPI density Push pull system possible