This tool can crimp 3/8”, 1⁄2”, 5/8”, 3⁄4”, and 1” copper crimp rings. Tool calibrations are made easy with adjustable lock screws, and instant jaw installation and release allows for a quick change between jaw sizes. The 1" jaw size is obtained by taking out the jaw and using it without any attachment.

The kit includes a 15" crimp tool, interchangeable 3/8", 1/2", 5/8", 3/4", and 1" crimping jaws, and a Go/No-Go crimp gauge to ensure a proper connection, all housed in a tough plastic case.