11pcs Die Punch Snap Kit DIY Leather Craft Metal Heavy Duty Hollow Punch Hole Tool Kit for Install Rivet Button For Leather Tool. This tool is for snap fasteners, press studs, Rivet, Grommet installation, which can be used for 10mm, 12mm, 15mm metal poppers. Total 11pcs. For punch hole and install Rivet Button. Material: Metal. Origin: Mainland China. Type: Paring Chisel. DIY Supplies: Metalworking. Model Number: Leather Rivet Setter. Blade Material: Stainless Steel. Handle Shape: Round.