Generic 4-inch marble/granite cutting blade, consider the following factors to ensure you choose the right blade for your needs: Material Compatibility: Verify that the cutting blade is specifically designed for cutting marble and granite. These materials are hard and require a blade with a specific composition and tooth design for effective cutting. Diamond Cutting Edge: Marble and granite are hard materials, so cutting blades designed for these materials often have diamond cutting edges. Ensure that the blade you choose has a diamond-coated edge for durability and efficiency in cutting hard stones. Segmented or Continuous Rim: Marble and granite blades are typically available in segmented or continuous rim designs. Segmented blades are suitable for faster cutting, while continuous rim blades provide smoother cuts. Choose the appropriate rim type based on your cutting requirements. Arbor Size: Check the arbor size (the hole in the center of the blade) to ensure it matches the arbor size of your saw. The blade must fit securely on the saw's spindle. Maximum RPM: Confirm the maximum RPM (revolutions per minute) of the blade and ensure it is compatible with the specifications of your saw. Operating the blade at the correct speed is essential for safety and optimal performance. Wet/Dry Cutting: Some marble and granite cutting blades are designed for wet cutting, which helps reduce heat and dust during the cutting process. Confirm whether the blade is suitable for wet or dry cutting, depending on your preferences and the application. Brand Reputation: While you may be looking for a Generic blade, consider purchasing from reputable brands or manufacturers known for producing quality diamond blades. Quality can vary, and well-known brands often provide more reliable products.