Features: Enhances cooling efficiency with the DC5V 5015 USB 5V Blower Fan, features 50x50x15mm design . With 10.5 CFM airflow, and quiet not more than 18dBA operations for 3D printers and components extended life. 7blades durability plastic construction and sleeve bearing system, this 5V fan delivers fast speed airflow (3600-4000 RPM) while maintaining low noise. For DIY enthusiasts, PC builders, and 3D printing professional reliabled heat management for electronics and small space. Perfectly suited for cooling 3D printer extruders, PC CPUs, networking equipment, or small enclosures requiring consistent airflow to prevent overheating. Specifications: Hydraulic bearings Size: about 50x50x15mm/1.97x1.97x0.59in Color: Black Interfaced: USB Cable length:about 93cm/36.61in Voltages: 5V Fan speed: 5164rpm Material: Plastic Package Includes: 1PC USB 5V 5015 Cooling fan note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.