GDSTIME 50mm x 50mm x 20mm 5V DC Brushless Cooling Fan Size: 50x50x20mm or 1.97x1.97x0.79 inches  Rated Power: DC 5V 0.25Amp  Bearing type: Sleeve Speed: 4800RPM  Air flow:15.5CFM  Noise:26dBA Connecter: XH2.54-2Pin  Cable Length: 20cm Or 7.8 inches Exhausts hot air out of a PC, increasing dependability and extending component lifetime Cools your PC, increasing dependability and extending component lifetime RoHS compliance for protecting the environment Package include: 1 Piece fan include mounting screws & nuts