The Greenlee 746 Hydraulic Knockout Ram Punch Driver is a hand tool made in the United States. It comes with a 1/4" snap coupler and is designed for use with knockout and punch sets. The brand Greenlee is known for producing high-quality tools, and this hydraulic punch driver is no exception. It is a reliable and durable tool that can be used for a variety of applications in the industrial and commercial sectors. (EELEC)