Adapter Nipple 3 4" Male x 1 “ Female Pipe Fitting NPT Brass Adapter 3 4 inch x 1inch Female Pack of 1 auspowers_batchsix Verify part fits before purchasingSpecs: June_2023_update Verify part fits before purchasingSpecs: ID: 3 4" this set is hand painted and glazed to perfection just make a hole These fittings are:durable (thanks to premium brass construction)resistant to corrosionsoliddo not leakhave a better thermal conductivity and a low magnetic permeabilitydo not deform with timeprovide tight sealing thanks to the relative softness of brass are easily installed or changed (thanks to the hexagonal head that increases the bearing surface when a wrench is applied to the fitting)