The CK850 Series Diamond Tile blades use Real Natural Diamonds and have a 1.2 mm Diamond rim for extreme speed, ultra precise cut and for long life. Can be used wet or dry and with hand held machines. Ideal for use on:Tiles - However hard.Marble and StoneGranite Technology Used:Safety: Marcrist diamond products comply with every known safety standard worldwide.Self Cooling: Titanium coated diamonds provide a self-cooling and self-sharpening cutting edge.Armoured Blade Core: Armoured centre for blade strength. PATENTED.Engineered Core: Precision Engineered core, hardened, ground, balanced and tensioned.Semi-Silent: Noise suppression for semi-silent operation. PATENTED.Ultra Thin and Lightning Fast: Ultra thin diamond edge guarantees lighting fast cutting.V-UHP Fusion: Vacuum Ultra High Pressure Fusion Technology used in the Aviation and Space Industry. Segments are formed under a vacuum (to eliminate impurities) and extreme pressure and fused to the core. The result - extreme bond homogeneity and adhesion for outstanding performance and safety.