4″ Supreme Glass Diamond Blade from DTA has a continuous rim of 3/8″ wide which is specially formulated to provide the highest quality cut in glass tile. A premium Chip free cutting in glass is what this blade was designed for. DTA has been servicing the tiling and flooring contractor for over 40 years. Dimensions of the diamond blade is 4″x.060″x5/8″.DTA has been servicing the tiling and flooring contractors for over 40 years.