One-sixth (1/6) horsepower heavy duty electric motor manufactured by Master Electric Co., Dayton, OH. Runs 1725 rpm and has alternating current as 110 or 220 volts. It is over 60 years old and is a quiet running motor and works fine. The company that manufactured these motors no longer manufactured them after 1961 as the company was sold to another company. This motor belonged to my dad and he used it on his farm and it now has been in storage for 50+years.