As part of the wide range of Goodridge hose adaptors the 306 series are a male to male adaptor featuring AN (JIC) threads on one end and a metric thread with a concave seat on the other end.
The Goodridge Male To Male JIC - Metric Concave Seat Thread - 6 (9/16 x 18) - M12 x 1.50mm In Anodised Aluminium, Blue would be ideal for applications requiring a high-quality, M12 x 1.50mm metric concave seat thread in anodized aluminum for a durable and visually appealing finish.