Pros : As a glass art instructor, I order these tiles again and again for my students. They are equally perfect for small project classes and beginner's lessons as well as for more advanced students wishing to make larger works. They also come in handy for artists who don't have large kilns and the 4" x 4" size is great for test firings and to work out new patterns and ideas. I highly recommend these Clear Fusible Glass Tiles for fusing and slumping projects.
Cons : It would be nice if they were available in a 6" x 6" size.