The Ryobi ONE+ 18V PEX Crimp Ring Press Tool P661 is a high-quality, cordless tool designed for crimping PEX rings. It operates on Lithium-Ion battery technology and has a voltage of 18V, providing efficient power for various crimping tasks. The set includes a gauge and die inserts, making it a versatile and convenient tool for home and workshop projects. This press tool, in the signature Ryobi green color, is a reliable and durable addition to any toolbox.