Kay Industries is a global industry leader in design, manufacturing and marketing single-phase to three phase power converters. Phase converters are Kay Industries only business. Kay Industries provides phase converters for agriculture, food processing, HVAC, metalworking and more. They don't sell other products because they don't want to divert their attention from producing high quality phase converters. Phase converters are serious business, that's why Kay Industries has dedicated its business to them.
Tools Plus offers Kay Industries' rotary 3-phase converter because it is the most flexible and reliable type of phase converter. Rotary 3-phase converters run any type of load or combination of motors. For this reason, Kay Industries recommends rotary phase converters over other types. Unlike static 3-phase converters which don't allow your motor to operate at full horse power, rotary phase converters help motors reach their full potential.