NPT Male-Female Extension 1/8" 372-02 AF372-02 Blue Finish. Extension Length is 1-1/4" (31.75mm) 1/8" NPT EXTENSION Aeroflow has become synonymous with premium quality performance products. Aeroflow objective has been to incorporate state-of-the-art manufacturing, aerospace quality materials and rigid quality controls to produce quality performance products at extraordinary value. Aeroflow has taken its forward thinking knowledge to the street, manufacturing a wide range of race quality products to improve street performance and dependability.