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Features: - Excellent for cooling heatsinks on hot ends, prints, or other cooling needs - Made of high quality PBT+30% glass line +VO - Bearing is high precision, long life and low noise Specifications: - Temperature of usage environment: -20 to 75 - Working environment temperature: 40 - Service life: Can be continuous working 24 hours - Speed: 4500, 6500 (R/min) - Voltage: DC 12V - Size: 50 x 50 x 15mm - Structure: Sleeve bearing Package included: 10 x Cooling Fan