What is a slater's ripper?
A slater's ripper is a specialised hand tool for removing individual broken or damaged slates from a roof.
The ripper cannot be used for anything else, and there don't appear to be any other tools designed for this job.
How does a slater's ripper work?
A slater's ripper works when the user pulls on the nail(s) that hold a slate in place, using the hook at the end.
You can also use the notch at the tip of the blade to push against a broken nail to remove it completely.