This HYDROLICO partition pass-through fitting is designed for secure connections. It accommodates a 4mm pipe and features a 1/8 PT thread, making it suitable for various fluid or pneumatic applications where a bulkhead connection is required.The HYDROLICO ZPMF04-01P is a partition pass-through fitting. It is designed to connect a 4mm pipe to a 1/8 PT thread, allowing for a pass-through installation through a partition.