Features 1、Large wind force up to 4CFM makes this 3D printer fan very powerful. 2、High speed up to 8500RPM offers a super fast heat dissipation. 3、Low noise of 25dBa gives a quiet heat dissipation. 4、Adopting DC5V power to give a high performance while saving power. 5、High quality material enables this 3D Printer Cooler to work for a very long time up to 35000 hours. Specification Features: Large wind force up to 4CFM makes this 3D printer fan very powerful. High speed up to 8500RPM offers a super fast heat dissipation. Low noise of 25dBa gives a quiet heat dissipation. Adopting DC5V power to give a high performance while saving power. High quality material enables this 3D Printer Cooler to work for a very long time up to 35000 hours. Specification: Product type: 3D Printer Fan Material: ABS Number: 5PCS Wind-force: 4CFM Revolution speed: 8500±10%rpm Rated voltage: DC5V Rated current: 0.1±10%A Noise: 25±10%dBA Service life: 35000 hours Cable length: approx. 7cm/ 2.8in Quiet heat dissipation: Support Bearing type: Sleeve Package size: approx. 8 * 6 * 1 cm/ 3.1 * 2.4 * 0.4 in Package weight: 31g/ 1.1oz Package List: 5 * 3D Printer Fans