Professional tool fore commercial or occasional use 300mm / 12" Diamond Blade Cutting Disc Suitable for cutting all general building materials including brick / concrete / blocks etc... Diamond blade for strength and durability 20mm bore Suitable for use on most 12" STIHL saws Serrated turbo diamond segments ensure a fast and sharp cut through virtually any construction site materials. Enabling intensive use and resulting in quiet, smooth, vibration free cutting. Large diamond segments make for minimal segment wear, making this blade more economical per cut. Sintered diamond cutting segments Suitable for the Following Materials: Asphalt / Breeze Block / Block Paving / Engineering Brick / Facing Brick / Granite / Indian Stone / Precast Concrete Paving / Ceramic Tiles / Clay Pipes / Roof tiles / Hard concrete / Soft concrete / Slabs / Kerb Stones / Aerated block / Stone / Concrete Kerbing, Concrete Lintels / Metal Profiles / Steel / Angle Iron / Box Section / Flat Bar / Reinforcing Bar / Scaffold Tubes / RSJ'S and Pipe Work.