1.Size: 19mm/ 3/4inch -16mm/ 5/8inch variable diameter, thickness 0.8mm/0.03inch,total length 66mm/2.6inch. 2.Features: One end is compatible with water pipes of one diameter, and the other end is compatible with water pipes of another diameter, perfectly solving the problem of connecting water pipes of different diameters. 3.Material: Made of galvanized iron material,corrosion-resistant,rust proof, more resistant to bending,deformation and compression. 4.Applicable: automotive cooling systems, automotive heating water pipes, water tank guide pipes, providing very secure connections. Ensure that there is no coolant leakage under the working pressure of the cooling system. 5.Packaging: 2pcs 19mm-16mm Variable diameter heater hose connector joint. Size 19mm-16mm Hose Color Gold Material Galvanized Iron Item Weight 1.57 ounces Part Number HF683B-01 Manufacturer Ruimou Item model number Hose connector joint Batteries Included No Batteries Required No Included Components 2pcs Variable diameter heater hose connector joint. Item Package Quantity 1