Review on Premium Carbon Hollow Leather Gaskets: Set of 9 High-Quality Pieces by Robert Sample

Well, they did their job: They punctured multiple layers of fabric about 32 times. But the design flaw is that the hole in the cylinder is the main weakness. It will bend and break at this point if you don't hit the punch exactly perpendicular or straight. This happened with two shots in my set. One was beyond repair. The other self has to score periodically, and it certainly won't stay that way forever.