THIS IS AN ANTIQUE STONE GRINDING WHEEL. MADE IN THE 30'S.CAME FROM A SAW MILL IN THE ROCKY MOUNTAINS. HAS BUILT IN WATER RESERVOIR. THE CIRCUMFERENCE OF THE WHEEL IS 48 " INCHES. THERE ARE NO CRACK'S, CHIP'S OR GROOVES ON THE STONE. THIS IS A HAND CRANK STYLE. AND THE STEEL SHAFT THE STONE IS MOUNTED ON, HAS BALL BEARING'S. VERY WELL BALANCED. EXECELLANT ANTIQUE LAWN DECORATION