Features: High efficiency cooling blower fan for /K1MAX/K1C 3D printers ensures rapid heat dissipation from hotends while maintaining whispers quiet operations under 25dB. Features double ball bearings for enhanceds durability and precise airflows control, coupled with ABS housing that continuous high temperature printing. for 3D printing enthusiasts and professional maker requiring thermals management for printer upgrades and maintenance. Maintains nozzle temperature during prolonged printing in workshops, maker space, or home baseds 3D printing setups. Direct replacement fan with easy installation specifically engineered for 4020 blower fan slots in 3D printer models, backed by 10,000+ hour lifespan certification. Specifications: Size: 40x40x20mm/1.57x1.57x0.78inch voltages: DC24V Current: 0.3A Power: 2.4W Speed: 12000±10%RPM Air volumes: 5CFM Terminal model: GH1.25-4P-L60 Temperature ranges: -10-80℃ Bearings: Double ball bearings Package Includes: 1PC 4020 Blower Fan note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.