Starter Set for Glassboards. Ideal for FRANKEN Glassboards; Content: 250 ml Cleaning Spray; 4 ChalkMarkers(1 each in red, green, blue and black); 4 Neodymium magnets cube 10 x 10 x 10 mm, magnet strength: 4 kg, silver; Microfibre cleaning cloth, 40 x 40 cm, blue.