Feature: 1. With sleeve bearing and thin line outline, such high quality 3D printer accessories supports fine workmanship. 2. Thin line outline can keep high air volume, which makes this fan kit can work in higher performance. 3. Supports brushless sleeve bearing, printer fan is easy to use in the practical life, made of materials in high quality. 4. DC fan + turbo fan kit's installation is simple, which does not require particularly complicated operations. 5. After many inspections before leaving the factory, cooling system's quality is guaranteed, you can use it with confidence. Specification: Item Type: DC fan + turbo fan Kit Rated Voltage: 5V Material: Plastic. Package List: 1 x DC Fan 1 x Turbo Fan