Strathmore Black Artist Tiles are perfect for creating meditative pattern drawing with gel pens, light colored pencils, metallic markers and more. Create intricate white or lightly colored patterns and meditative artwork on these black precut artist tiles. Paper weight is 60 lb (160 gsm) and has a fine tooth surface. This top glue bound bound pad contains 30 tiles. Made with 30% post-consumer fiber, acid free.