Dewhel Brass 1/8 NPT Female to 1/8 BSPT Male Gauge Sensor Sender Thread Adapter Reducer NPT to BSPT Straight Adapter 1/8 NPT female to 1/8 BSPT male Adapter Good for Fuel Pressure and Oil Pressure Gauges Material: Brass BSP-NPT Adapter 1/8" Male BSPT to 1/8" Female NPT Brass Pipe Fitting Euro to US