Steelmax D1-AIR Features ?Portable Right Angle Pneumatic Mag Drill cuts holes up to 1 3/8" (35mm) diameter in 1ö (25.4mm) thick material. ?Low Profile of 7-1/16ö (180mm) for use in restricted space. ?Pneumatic drive and permanent magnetic base eliminate the need of an electric power supply. ?Ideal solution for hazardous environments such as oil drilling platforms, mining industry, shipbuilding and petrochemical industry.