This 5" Wet Jitterbug Sander is a heavy-duty professional quality tool designed for many years of reliable service.High efficiency sealed ball bearingLow vibration operationPrecision die-cast housingVariable speed control hand paddleFeatures a high efficiency sealed ball bearing drive assembly for smooth low vibration operation and long life. The precision die-cast housing provides a solid foundation and offers ergonomic, one-handed operation with speed controlled by an infinitely variable hand paddle and rotary knob speed limiting control.Replacement Sanding Disk: 5 [127mm] Hook and Loop type RPM: 8,000 free speed Orbit Size: 3/32 in. [2.4mm] Minimum Air Consumption: 7.1 CFM [201 lm] Inlet thread size: 1/4" FNPT Water Hose Length: 13 feet [4 meters] Sanding disc is not included.