Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Keep from running out vent tube in case of a roll over, a secure connection for the vent hose Allow air in and out of the tank, prevent blow-back while filling a tank or vacuum build-up when drawing from the tank Made of aluminum and steel, with a mesh screen to keep out any debris Allow for installation in limited space, compatibles with 5/16 barbed hose connection, colored in black Universal applications on automotives, off-roads, ATVs, UTVs, SXSs, and more Color: Black Material: Metal Package Contents: 1* Tank Vent Roll Over Valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.