This 14-piece tee fittings adapter connector set is designed for use with hydraulic pressure gauges and diagnostic tools in automotive and industrial applications.Contents include: - 3/8" Female (1 piece) - 3/8" Male (1 piece) - M18x1.5 Female (1 piece) - M18x1.5 Male (1 piece) - M16x1.5 Female (1 piece) - M16x1.5 Male (1 piece) - 7/16" Female (1 piece) - 1/4" Female (1 piece) - 1/4" Male (1 piece) - M14x1.5 (1 piece) - M14x1.5 Female (1 piece) - 11/16" (1 piece) - 9/16" Female (1 piece) - 9/16" (1 piece)