Turtle Wax MM14R Marvel Mystery Oil, 1 Gallon Pitcher Pumps & Accessories Nut Diameter: 1/2"

Nut Diameter: 1/2"

For flue size : 4"

Hexagonal shaft for positive chuck engagement

) minimizes user fatigue

Will not dull or damage any synthetic fiber

Turtle Wax MM14R Marvel Mystery Oil, 1 Gallon Pitcher Pumps & Accessories Nut Diameter: 1/2"Highlights: 1 Gallon capacity Oil additive Helps improve fuel economy Safe for catalytic converters and oxygen sensors Added to gas it cleans and lubricates fuel injectors and carburetors, improves gasoline mileage and extends spark plug life Reduces and prevents varnish and gum build up When added to engine oil: Prevents valve sticking and clatter Fortifies properties of engine oil, prevents breakdown caused by extreme temperatures Added to oil it