Aiskaer 10-piece Stainless Steel Hollow Leather Punch tools1mm to10mm Punch tools set Heat treated carbon steel construction Precision ground flute and cutting edge Great for making clean holes in gaskets, leather, plastic, rubber and other soft materials Easy to use, just place punch in position and strike firmly with hammer or mallet Used for Punching Holes In Leather, Vinyl, Plastic, Paper, etc.