The fan comes in a case packaging and has a unit quantity of 4 I have 5 cases of 4 fans you are buying one case of 4 fans. sorry it’s not very clear in the listing. I also have 2 singles if anyone is interested

This 25mm fan from Winsinn is perfect for your 3D printer or other compatible devices. With a maximum rotational speed of 8600 RPM and maximum airflow volume of 2cfm, it's sure to keep your printer cool. The fan features a clear color and multicolor LED lights for added style. Its hydraulic bearing type and air cooling method make for efficient and effective use.

The fan has a power connection of 2-pin and a voltage of 5 volts. It has a noise level of 20.1 dB and a maximum fan speed of 8900rpm. The fan is made of plastic material and has dimensions of 0.98"L x 0.39"W x 0.98"H, with an item weight of 1.44 ounces.