7 in. Supreme Diamond Blade with laser cuts in blade from DTA has a continuous rim of 5/16 in. which is formulated to provide the highest quality cut. Laser cuts in the blade to eliminate hat which extends the life of the blade. A premium Chip free cutting is what this blade was designed for. Ideal for porcelain tile, ceramic tile. Also formulated for natural stone such as granite and marble. DTA has been servicing the tiling and flooring contractor for over 40 years. Dimensions of the diamond blade is 7 in.x.060 in.x5/8 in.DTA has been servicing the tiling and flooring contractors for over 40 years.