No exposed internal mechanisms. Constructed for rugged dependability. KES patented quick turn technology gives you the speed of a lever quick release with the added security and adjustability of a knob design. You have more flexibility and options of what manufactuer you purchase your products from. By simply loosening the knob approximately 1/8 turn counter clockwise, you can quickly adjust or reposition your quick release plate. To easily top load or remove your quick release plate, turn the knob 1/2 turn counter clockwise.