Colder Products Company's DrumQuik PRO dispensing system is designed for the safe and efficient delivery of diesel exhaust fluid (DEF) from bulk transfer containers. It consists of a polypropylene coupler and a polyethylene drum insert assembly. The drum insert assembly contains a bung closure and dip-tube, and can be shipped as part of a drum or IBC package, providing a cost-efficient alternative to open and semi-open dispensing systems. The coupler features a built-in vent port, which allows the connection of a filter to prevent DEF contamination.