Flowmeter, Mechanical, GPM Max. 20, Max. Pressure (PSI) 50, Connection Size (In.) 1 MNPT, Max. Temp. (F) 125, Length (In.) 5-13/16, Width (In.) 5-1/4, Height (In.) 4-1/2, Housing Material Aluminum, Fitting Aluminum, Chamber Material PBT Polyestester, Seal Material Nitrile, Shaft Material Stainless Steel, Flow Range 4 to 20 gpm, Display Mechancial Register, Resetable Cumulative Totalizer 999.9 Gallons in 1/10 Gallon Increments, Max. Viscosity Diesel fuel, For Pipe Size 1 In. This product ships in approximately 1 days