G (Metric BSP) Thread Male to NPT Thread Female Pipe Fitting Adapter - Lead-Free Adapter (1/2 inch) G1/2" Male Thread Water Pipe to 1/2" NPT Adapter Female Thread. Adapt from Male BSP to Female NPT. Metric BSP 1/2" (G) Male to NPT 1/2" Female pipe fitting converter (Brass) Material : Brass Lead - Free Adapter Size : 1/2" Male G,1/2 " Female NPT