This Cole Parmer Masterflex Variable Speed Peristaltic Pump 7553-50 with Head is in good condition, has been tested and is guaranteed to be fully functional. This item came from a local lab that had surplus equipment. We urge customers to view all photos as they show overall condition, included accessories and functionality. Please feel free to contact us with any questions. DESCRIPTION Precision, versatility, and ease of use make the Cole Parmer Masterflex Peristaltic Pump technology the preferred solution to increasing numbers of applications in the processing industry and in industrial applications. Under real-world conditions, Masterflex sets the standard for excellence. Unit has a Variable Speed Head. Specifications: Power: 115 VAC, 50/60 Hz Fuse: 1.5 A Slo-Blo Model No. 7553-50 Variable Speed Range: 50 to 600 RPM Pump Head requires size 15 tubing (not included)