The PANDUIT part CD-550 is a die insert specifically designed to be used with the CT-2500CH crimping tool. This die insert is perfect for efficiently and securely crimping fully insulated terminals and splices with wire sizes ranging from 22 to 10 AWG. With its high-quality construction, the CD-550 ensures a precise and reliable crimp every time, making it an essential tool for any professional electrician or technician.