4.5“ Diameter blade，Arbor：7/8”-5/8“. Cutting Method: Dry/Wet Extremely smooth,chip-free cutting. 4.5“ Tile blade is designed for cutting porcelain, ceramic tile, granite, sandstone quartz, marble, brick, cement backer board . Package Quantity:5pcs 1. Professional quality for porcelain, ceramic, granite or natural stone tiles cutting. 2. Unique mesh rim blade, X teeth offer fast and smooth cutting. 3. Hot pressed tile cutting disc provide long life.4. Fits most tile saw and angle grinders with a 7/8"or 5/8" arbor. 13,200 RPM Max, available for both dry and wet cutting work.