set: In addition to the canvas snap tool, the package comes with 60 sets of marine grade snaps (10 sets of screw models, 50 sets of normal models), we offer more snap kit to money and the hassle of buying accessories separately. Magnetic design: The die has magnetic suction, so the removal and installation of the die is very stable and efficient, even if the work is shaken at a distance, it not fall off easily. Perforating function: we are equipped with a perforating abrasive head, just switch to complete the perforation, no need to buy a perforating machine and no hassle of switching jobs, one snap repair tool do it all! Say goodbye to those banging mounting punches and hurting your hands, snap fastener tool can be installed on the material faster and without the need for professional help. snap button tool is easily portable for all scenarios (canvas covers, boat covers, tarp, leather, fabric etc.). Robust and : snap press tool bodies are made from high grade heat treated alloy steel which is tough and rust . The head of the pliers is specially treated to make them harder and less prone to damage.