Underhill A-BA107FM Solid Brass Hose Adapter, Converts 3/4-Inch Attachments to 1-Inch Hose, 1-Inch FHT by 3/4-Inch MHT Converts any 1-inch Hose Thread Inlet to standard -inch Female Hose Thread. Commercial Quality Solid Brass Construction for maximum strength and durability. Designed with O-Ring Inlet to replace Standard Hose Gasket for low friction loss and high flow operation. The 1-inch FHT side will fit a 1-inch Male Hose Thread The 3/4-inch MHT side will fit a 3/4-inch Female Hose Thread