Product Information Material: Brass Thread: BSP PI. Select a Product Part NumberSize GV100BH1" GVO38BH3/8" GVO50BH1/2" GVO75BH3/4" GV125BH1-1/4" GV150BH1-1/2" GV200BH2" GV250BH2-1/2" GV300BH3" GV400BH4"