... mica, preset panels, marble quartz, trap rock, flint rock and concrete over 6000 PSI tensile strength Shavemaster Blades - For grooving ... bar, block, brick, hard brick, pavers, clay pavers and field stones. Our concrete cutting blades come laser welded, polished, sintered, ... hard use. Although a concrete blade provides better speed and longevity, they are designed for cutting a limited variety ...