Tempered (toughened through a process of extreme heating and rapid cooling during manufacturing process) glass is two or more times stronger than annealed glass. When broken, it shatters into many small fragments which prevent major injuries. This type of glass is intended for uses requiring superior strength and safety properties while standard glass could pose potential risk of injuries. Flat polish is the standard edge produced by a straight line rectilinear or CNC machine and produces a fine polished flat edge suitable for all furniture glass and frameless toughened panels.