GDSTIME Dual Ball Bearing Big Air Flow High Speed Preesure 4500rpm 12038 12cm 120mm X 38mm 5 Inch 12v Dc Cooling Fan (12V) Size:120x120x38mm or 4.7x4.7x1.5 inches; Rated Power: DC 12V 1.0 Amp ; Connecter: XH2.54-2Pin ; Cable Length: 25cm Designed for projects that requires cooling or ventilation; or as a replacement fan for various products. High Speed: This model is designed to maximize airflow and can be too loud for some applications. Speed: 4500RPM ; Air flow: 240 CFM ; Noise: 46dBA; Bearing type: Dual Ball Bearing Package include: 1 Piece fan include fan protector grill and mounting screws & nuts.