Usage Tips:Features: 1.CPU Water Cooling Block for Intel / AMD. 2.Red copper at the bottom, top cover is transparent plexiglass. 3.High Performance Copper Base. 4.Dissipate more heat from the CPU quickly. 5.Protect your computer from overheating. specification: CPU Water Cooling Block for Intel / AMD. Red copper at the bottom, top cover is transparent plexiglass. High Performance Copper Base. Dissipate more heat from the CPU quickly. Protect your computer from overheating. s: Color: Shown as the pictures Material: Metal + Red Copper + Plexiglass Thread Spec: G1/4" Outer Diameter: 12.9mm Copper Base Size: Approx. 5 * 5 * 3 cm / 2 * 2 * 1.2 inch Compatible CPU: Universal for INTEL/AMD, for Intel 775, 1150, 1155, 1156, 1366; for AMD AM2, AM3, AM3+ Package Weight: About 155g Package List: 1 * CPU Water Cooling Block 4 * Screws (Not including other things.) Note: Not for AMD4CPU, can be widely used for Intel / AMD computers.