Portable Pipe Threading Machine Compatible Die Head Type 11R Maximum Compatible Pipe Size 1 1/4 in Minimum Compatible Pipe Size 1/2 in Current 12 A Die Head Sizes 1/2 in to 1 1/4 in Die Head Sizes Included 1/2 in 3/4 in 1 in 1 1/4 in Features Dual inV in Jaw Support Arm Over-Molded Contoured Grip Free Speed 36 RPM Frequency 60 Hz Horsepower 1/2 hp Housing Material Cast Aluminum Plastic