... 4.thread type:Metric,NPT,G,PF,BSP Liquid-tight electrical conduit connectors · Material: Iron,Brass,Stainless steel· Protection ... .520.0063.00 2"Φ51About us: KT-Flex Co.,Ltd mainly deals in developing and manufacturing high quality liquid ... , industrial facilities, wire harnesses, machine , instrumentation, telecommunication equipment, and automobiles etc. Liquid-tight electrical conduit connectors