Volts: 120, Max. HP: 4.8, Amps: 20, Speed - No Load (RPM): 600 / 1,200, Motor Protection: Clutch, Spindle Size (in.): 1 1/4 - 7, Suggested Diameter in Medium Aggreate (in.): 4 -7 (600) / 3/4 - 4 (1,200), Tool Weight (lbs.): 24 For with Vac-U-Rig and Dymorig diamond core rigs to drill holes into reinforced concrete Handles core bits from 3/4in. to 4in. in diameter Built-in water swivel Includes cord with 20 Amp twist-lock plug, adapter to receive standard water hose, water control valve, and wrench Model 4005 U.S.A.