RYOBI introduces the ONE+ PEX Crimp Ring Press Tool. With 320 crimps per charge and an easy one-handed crimping operation the Crimp Ring Press Tool eliminates user fatigue and allows you to get the job done faster. The crimp cycle takes less than 5 seconds with a LED light to indicate completion. The Crimp Ring Press Tool fits all PEX sizes from 3/8", _", ®" and 1". The jaws of the tool fit a 1" ring and die inserts for _" and ®" rings are included (3/8" insert not included) as well as a Go/No Go Gauge to ensure a proper crimp is achieved.