The Speedknife is the only two wheel patented pizza cutter in the world!! Cuts pizza in half the time. The two wheel design ensures a straight cut every time. Be sure to watch the videos to see the SpeedKnife in action. The handle is made of 100% injection molded US FDA Polylac ABS plastic. This material allows for long lasting durability and safe food contact. The cutting wheels and U-Bracket are made of 100% food grade 420 J2 Stainless Steel. This provides a lasting sharpness to the blade and long lasting durability to withstand years of use. The wheels are secured to the U Bracket handle using custom made Stainless Steel fasteners and custom ball bearings to provide smooth action. They are removed simply by inserting a coin and turning the fastener. This allows for easy cleaning.