Wheel and Axels

What are Wheel and Axels? Wheel and axels can be screwdrivers, doorknobs, etc. The wheel is bigger circle and axel is on the inside. The wheel and axel move synchronously together. A wheel and axel is also a force magnifier. To find radius of axel, measure from center to edge of axel. To measure the radius, go from the center of the axel to the edge of the wheel. A wheel and axel is actually a 360 degree lever.