Speedhut A-181 Metric Adapter (1/8 inch NPT Female to M14X1.5 Male) Fitting, Metric Adapter, 1/8" NPT Female Thread to M14x1.5 Male Thread. For use with Speed hut pressure and temperature gauges. Fits Speed hut senders: sender-01, sender-02, sender-07, sender-09, and sender-14