Knowledge supplement: Cold head: A dedicated microchannel cold head with multiple memory designs, supporting up to four memories, with a transparent acrylic cover for optimal cold liquid visual effects. Built-in RGB lighting components, 6 LED lights, the light source can cover the entire cold head, the lighting effect is better. It needs to be equipped with a memory cooling vest and use its original accessories to ensure good compatibility. Memory cooling vest is our product, not including cold head, but it works better when used together! Features: 1. The thick aluminum alloy design and the contact surface of the water-cooled head are enlarged and more even. 2. Stable performance . 3. Memory cooling vest can make memory more reliable and durable. 4. Easy to install and use. 5. 100% brand new and high quality. Specification: Condition: 100% Brand New Material: Aluminium Alloy Color: Black Size: Approx. 13.5 * 3 * 1 cm / 5.3 * 1.1 * 0.3 inch Product Name: Memory Cooling Vest (without cold head) Product Model: RAMLA Scope of Application: Used with cold head, memory cooling Weight: Approx. 63 g Package List: 1 * Memory Cooling Vest 2 * Allen Wrench 2 * Screw 2 * Thermally Conductive Silicone Pad Note: 1. Please allow 1-3 cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 3. The original brand bare strip can be directly installed. The original brand has a cooling head with a cooling armor. The original memory cooling armor needs to be removed. When the original armor is removed, the heating method can be used to reduce the difficulty of disassembly. .4 . Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.