MERIT METAL POLISHED CHROME LID SUPPORTS - Cast high tensil brass, drop forged for increased strength. Suppoprts are polished chrome. Handed, packed in pairs unless ordered all one hand. SizeS, less plates, when measured open is 6", 8", 10", 12", or 14". Holes are countersunk as follows: 6" and 8" for #5 screws and 10", 12" and 14" for #6 screws.