Also known as cooland-line mold couplings, these quick couplings are used to install or remove cooling circuits in the molds or dies of injection molding machines and die-casting equipment. Parker offers a full range of quick couplings and nipples that are ideal for frequent access to cooling lines or for easy mold changes. Parker mold cooling system couplers are compatible with all integrated quick-disconnect cooling sockets of the same size. These metal quick couplings and nipples are robust and offer maximum flow performance and long equipment life.