Safe Print Lino Block Printing Tiles - Polystyrene Sheets for Printing - 16.5 x 16.5cm Pack of 50 Hints & Tips guide to usage, written by Mrs Lyn Nguzo, Teacher. Square lino printing tiles, ideal for craft projects. Measures 6.5 inches square. This product is not designed as or intended to be used by children under 14 during play.