Features:
1. Water Cooling Block for AM4 CPU.
2. Made of copper, stable and high performance.
3. Processed with anti-oxidization technology, smooth and bright surface.
4. The water contact area is large, thus to carry more heat from the CPU quickly.
5. Comes with mounting screws, easy to install. It has micro water channel. 

Specifications:
Model: AMD-JB3D
Material: Copper
Backboard Size: Approx. 10.5 * 6.3cm / 4.1 * 2.5in
Front Size: Approx. 5.5 * 5.5cm / 2.2 * 2.2in
Baseboard Size: Approx. 11 * 6.3cm / 4.3 * 2.5in
Middle Hole Diameter: 12mm / 0.5in
Distance Between Holes: Approx. 46mm, 55mm, 88mm, 97mm 
Weight: 470g

Package List:
1 x Baseboard
4 x Screw
4 x Spring
4 x Gasket