Stationery Ruler Silicone Mould, Protractor Right Angle Ruler Silicone Mould, for DIY Student Supplies, WhiteSize: about 164mm wide, 81.5mm long, 7mm thick; Flat Round: 3.5mm; 12mm; 20mm; 25mm; 48mm; Square: 5x5mm; Triangle: 5x4mm; Pentagon: 7x7mm; Arrow: 17x3mm; Horse Eye: 14x2.5mm.