1/4" Hose ID x 1/8" Male BSPT Brass Barb Fitting. BSPT does not meaure the same as NPT. 150 PSI maximum working pressure. -40° to 160° temperature rating. Not deemed lead free. Not for use with potable water. Please Note: BSP Thread size is NOT determined by its outside thread diameter in inches. Please review our attached BSP sizing chart to cross reference BSP thread size to linear inches