The Littelfuse CVP part FHM20200Z is a Fuse Holders Accessories MICRO2 Holder Kit Add-A-Circuit. This kit allows users to easily add an additional circuit to their fuse panel, making it perfect for adding extra accessories to a vehicle or other electrical applications. The MICRO2 Holder Kit is designed for convenience and ease of use, providing a reliable and secure way to expand the functionality of your fuse holder setup.