CK850 blades are described as having one of the Fastest Tile Cuts EverFeatures:- Marcrist diamond products comply with every known safety standard worldwide- Titanium coated diamonds provide self cooling and self sharpening cutting edge- Armoured centre for blade strength beyond belief (Patented)- Precision engineered core, hardened, ground, balanced and tensioned- Noise suppression for semi silent operation (Patented)- Ulta thin diamond edge guarantees lighting fast cutting- Segments are formed under vacuum and extreme pressure and fused to the corde. This results in a extreme bond homogenity and adhesion for outstanding performance and safetyMaterials:- All Tiles- Marble & Slate- GraniteSpecifications:Diameter - 180mmBore - 25.4mm