Add a bulkhead to your kettle, fermenter or any thin walled container. This bulkhead fitting has a female coupler on one side for installation of other hardware (like a hop strainer or dip tube) inside of your vessel. Seals are High temp silicone. All you have to do is drill a hole and mount it! Hole size is 13/16" to 7/8". Kit includes: 1/2" MPT hex nipple, 2 SS washers, 2 silicone seals, 1/2" female coupler.