Ambush towboat propellers are 100% CNC machined for the ultimate in accuracy and consistency. Michigan Wheel Marine developed the CNC machining process for propellers in the mid – 1980’s and revolutionized the way propellers were manufactured. Originally, the CNC machining technology was used to manufacture custom propellers for large mega-yachts where accuracy is critical and design geometry is complex. Now, that same technology is being used to provide the best towboat propeller on the market.