These vintage solid brass Knobs are in good condition but shows a normal vintage use and wear to it. It's solid and not hollow, unfortunately, the three shaft crew are missing but it can easily replace. The knobs diameter is 1¾” x ½” thick and about 1½” long from knobs to flanges and weighing approximately 1.6 lbs. each. Please see the photos in zoom for you to assess and judge the condition, what you see in the photos is exactly you will be received. Sales are final, Thanks!