This is the Faithfull Slater's Ripper Slate Repair Tool, model FAISR1. It is a high-quality hand tool made in the United Kingdom by the brand Faithfull. This tool is designed for repairing slate roofs and is an essential for any professional roofer or DIY enthusiast. The tool is made from durable materials and is built to last, ensuring long-term use. The manufacturer part number for this tool is FAISR1.