Model 300 Power Drive Threading Machine, NPT, 1 8 in to 2 in Pipe Capacity, 115 V AC, 15 A, 36 RPM, Complete Kit ORS NASCO As a circle layout tool As a circle layout tool with sliding soapstone holder and 360 degree scale on the magnetic base Will cut circles up to 30" in diameter As a circle burning guide use this same tool to cut a round plate snow or general purpose clean up Hollow back to easily level off areas that need to be flat portable design Cam action rear centering device turns with chuck Two heavy duty support bars Speed grip chuck with replaceable jaw inserts Forward Off Reverse switch and integral On Off foot switch Lightweight