Practical Replacement Parts: PC mainboard cpu radiator fan heatsink fixing clips, suitable for various 12cm fans. Material: Cooling radiator fan bracket hook is made of stainless steel wire, sturdy and rust resistant, the good elasticity can help your fan install more firmly. Use: Easy to install, just fix the fan clips on outer fixing hole of the fan, and buckle on the radiator. (Please refer to the installation details diagram). Wide Compatibility: Used to fix the 12cm fan on the radiator, compatible with such as Xuanbing 400, Donghai X4/X5 and other radiators. You will get: 4pcs CPU radiator fan hooks, to ensure good heat dessipation for you computer.