Plug is 1.800" where it slides in the hole, .370" deep where it sits in the hole, 2.235" overall diameter, flange is .125" thick and there are some threads on the top of the plug we are not sure what they do.
Note: This is a used item. This item might have been taken in on a trade. RBS may have inspected this item and deemed re-usable. There is no warranty expressed or implied with this item.