7" x.060", Porcelain Tile, Grinding Wheel, Extended Performance Diamond Matrix Provides Long Life & Enhanced Material Cutting, Continuous Rim Design Provides Chip Free Cutting In All Types Of Tile, XP2 & XP4 Blades Designed Specifically For High Power Tile Saws, Allowing Quick, Free, Low Heat, & Straight Cutting, XP2 & XP3 Blades With Laser Cut Expansion Slots Eliminate Blade Warping Due To Heat Build Up, Premium XP2 & XP4 Cutting Matrix Means XP2 Gives 2 Times The Life Of Standard Blades, XP4 Gives 4 Times The Life Of Standard Blades.