The Super Angel Juicer has all stainless steel gears with no plastic screws. For those seeking the best possible juice from everything, this is our first recommendation. The large juicing gears of the Super Angel Juicer are over 8+3/8 inches long and, unlike others, they have no plastic(screw) parts, being made entirely of high quality FDA approved food grade stainless steel. The precision engineering involved in manufacturing these gears offers the ultimate in breakdown of fruit and vegetable fibers and delivers the best possible nutrient extraction. These gears rotate at a lower speed(82 rpm) than other models, preserving nutrients and producing juices with a longer shelf life. The Twin Gears are solid stainless steel, whereas other brands use a lower strength stainless steel and have plastic screw ends that can break.