Application: DDR RAM Absorbs Ram's heat and improves heat dissipation performance. Heat dissipation function: Pure copper material absorbs memory heat and improves blue screen of death caused by memory overheating. Protection function: Better protect your memory, especially DDR2, DDR3, and DDR4 particles. If you accidentally drop it on the ground, it will be easily bumped, causing the memory to be no longer usable. In addition, it effectively protects memory components from electrostatic attacks. Compatible with all double-sided SDR/DDR SDRAM (one side requires DIY thickening of the side without ram chips) Suitable for all baseboards. Compatible with all SDR/DDR SDRAM. Due to different production batches, there may be color differences in the appearance of the product, which does not affect use. Colour:Copper Color Material:pure copper Size: 126x26x7mm Package Contents: 4 * Memory Heat Sink Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.