Toughned Glass that has undergone a controlled heat treatment to increase strength. It has high durability and is therefore suitable for applications where strength and heat resistance are important. It is almost four to five times stronger than annealed glass. Even when broken, its relatively small pieces reduce the possibility of injury. Toughned Glass is perfect for spider and dot fixed glasses because of its high edge strength tempered glass. The main advantages of tempered glass are: Stronger than annealed glass, Very durable and impact resistant Breaks into small pieces, causing less injury.