High quality self-adhesive magnetic sheet. The set includes 25x punched circles in diameter of 32mm. http://www.tabletop-art.de/Magnetic-Foil-round-32mm

Please also check out also our magnetic foil range, we have many other sizes and shapes 🙂 http://www.tabletop-art.de/Magnetic-Foils

ferrofoil 20x30cm:  
round 25mm:        
round 30mm:       
round 40mm:       
round 50mm:       
20x20mm set:       
25x25mm set: