This wicked-looking tool is used by Slaters — people who put slate on buildings — to replace damaged slates. You slip the ripper under the slate tile and shear the nails holding the tile so you can remove it.
You can find the Ripper for about 14 Euros or $20. Most of the sites that sell this tool, whether they sell the pictured Faithfull Tool or some other brand, sell them across the pond in Europe. It’s not like they have a monopoly in slate roofs over there, as I’ve see at least a few here in the States. Anybody have another good source to buy one of these tools?