Hexagon Nipples / Pneumatic Fittings (pH4-M5) Zhejiang BLCH Pneumatic Science & Technology Co., Ltd. Base Info Model NO.:PH4-M5Trademark:BLCH,OEM,NATURALOrigin:China Description Pre:L Type Pnuematic Connection (PLF6-04) Next:T Type Fittings / Connector (PD8-02)