Coring Rig Components, Diamond Coring Rig, Motor HP 4.8, 20.0 Amps, No Load RPM 450/900, Core Bit Cap Concrete 10 In., Overall Height 43-1/2 In., Column Dia. 2-1/2 In. x 2-1/2 In., Column Height 43-1/2 In., Tool Weight 111.5 lb., Corded, Voltage 120VAC, Features Small Cast Aluminum Base With Four Leveling Screws, Rear Mounted Rack And Pinion Feed, 1-1/4 In.-7 Spindle, Includes 4096 Diamond Coring Rig Motor, Small Base Stand, Vac-u-rig Kit, Meter Box, MILWAUKEE P/N 4115-22