This is the Heavy Duty High Capacity Fuel Filler Valve from Sullivan.FEATURES: For large and giant scale RC airplanes Fills or empties fuel tank safely without disconnecting any fuel lines Safe for all type of fuel including gasoline, glow fuel, or smoke oil Aluminum alloy construction Pull to open-push to close, prevents engine flooding while refueling Works with 5/32" fuel tubing-no extra connections or fittings needed Mounts flush with fuselageINCLUDES: Heavy Duty High Capacity Fuel Filler Valve with two 3x12mm phillips head mounting screwsSPECS: Width between Mounting Hole Centers: 1.2" (31mm) Length of Valve behind Mounting Plate: 1.4" (35mm) Valve Diameter: 0.69" (17.5mm) jxs 03/12/13 ir/jxs