https://www.plasticsmachinerymanufacturing.com/molds-tooling/product/21122771/hasco-america-inc-hasco-attachments-indicate-coolant-lines
Hasco attachments indicate coolant lines | Plastics Machinery Manufacturing
New blue- and red-colored attachments can be connected to molds to indicate where coolant enters or leaves the mold.
coolant linesplastics machineryattachmentsindicatemanufacturing