Why Choose This:★The fan buckles cpu can be used to install and secure the fan inside the chassis to provide heat dissipation and air-circulation. The pc fan buckle can also be used to fix other types of fan devices, such as hard drive cooling fans.★Turn off the computer and power-plug. Insert one side of the buckle into the corresponding fixing hole, and then press down the other side of the buckle to align it with the fixing hole. Gradually apply even pressure to fully press the buckle into the mounting hole. Repeat the above steps to ensure that the heat sink and CPU are fully fixed.★The cpu cooler fan buckle is light in weight, small in size, easy to carry and store, easy to use, and good performance. Effectively improve system heat dissipation, and reduce chassis noise.★Length: 10.3cm/4.06 inch; Center Width: 4cm/1.