2" plugs 10 in a pack for use in sheet metal like in auto body or refrigeration. these are for 2 inch holes these are to fill a 2"inch diameter hole if the hole is out of round or you are using for a thicker material you will need to seal the plug into place with silicone or some other sort of sealant. these are finishing plugs made to cover a hole. These plugs are made of plastic and DO NOT contain any metal. The size of these plugs are for a cleanly drilled hole measuring 2.00” the measurements are actual measurements NOT trade sizes. If your hole is oversized at all you will need to seal the plugs to hold them in place.