The first field installation of the newest A●LOK Connector the A●LOK Premium in July 2009. This stormwater job was called Delaware Creek in Toledo, Ohio and the Precaster was Mack Industries of Toledo. Watertight connectors were chosen over grouting to speed up the installation. The interesting thing about this job was the 42"RCP made by Independent Concrete Pipe had an OD of 51.25" which is the very biggest size suggested for the #1640 A●LOK connectors cast into these manholes. However, the extra flexibility of the A●LOK Premium connector made the installation of the pipe, by contractor E.F.Zeiler, very quick, requiring minimum force.