Suitable for use on: Asphalt ove concrete (occasional use) Bricks - Class A Engineering, Class B Engineering, Standard Facing Bricks Clay Products Block Paving Flagstones Flint Aggregate GeneraL Purpose Concrete Heavy Steel Reinforced Concrete Light Steel Reinforced Concrete Concrete Blocks Solid Density 12+ Newton Blocks Granite Blocks and Worktops (occasional use) Sandstone Indian (occasional use)