Flare Nut Wrench, Alloy Steel, Satin, Head Size 16 mm, 18 mm, 6-Point Flare Nut, 8 3/4 in, 15°/ OVERALL LENGTH: 223.8 MILLIMETERS NOMINAL WRENCHING SURFACE SIZE: 16.0 MILLIMETERS NOMINAL FIRST END WRENCHING SURFACE SIZE: 18.0 MILLIMETERS NOMINAL SECOND END WRENCHING SURFACE SHAPE: HEXAGON BOTH ENDS INTERNAL SPECIAL FEATURES: STYLE - FLARE NUT BOTH END, SIZE - HEAD THICKNESS-LARGE END 13.2MM, SMALL END - 11.7MM MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMIUM OVERALL SPECIFICATION/STANDARD DATA: 05047-ASME B107.100 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD NONDEFINITIVE SPEC/STD DATA: 1 TYPE