DK-113 is a pair of high quality wrought brass door knobs with a brushed nickel finish. The knobs are hollow solid brass done in an authentic old style design. Each knob is 2 1/4" in diameter and fit doors between 1" and 2 1/2" in thickness. Included is a steel spindle that is 9/32" or 7 mm with a 3/8-20 thread. Please note that the knobs are a special order item and may take up to ten days to ship. They are returnable if you are completely satisfied.