9" Husqvarna 576778501 EL35 Cut n Break Diamond Blade- 5 pack : 

Use the twin Husqvarna? EL35CNB Blade Set, with it's low-speed, wet-cutting hand-held power cutters to flush-cut and channel-carve river, flint and trap rock, marble and granite, mica and quartz and both heavily reinforced concrete and concrete with a psi tensile strength of more than 6,000. The twin blades function in a cut-and-break sawing application. The Husqvarna EL35CNB blade set creates two-row saw-cut channels that leave behind core material that a breaking tool then chips out. The twin blades apply successive cuts up to a depth of 16 inches so that they can cut recesses, window frames and openings in the hardest of precast material. The Husqvarna general-purpose blade set also functions as a straight-cutting and angle-cutting accessory for powering through curbstones, pavers, and building-block frames. Each blade contains a segment of 15 flat-top diamond teeth at a depth of 0.295 inches. The computer-engineered Husqvarna laser-cut blade is 9 inches in diameter and contains expansion slots. Husqvarna EL35CNB blade set works with low-speed, wet-cutting hand-held power cutters
Works with Husqvarna K760 CnB and K4000 CnB Power cutters Twin blades cut through hard concrete, steel-reinforced concrete and dense natural precast material Blades function in cut-and-break, straight-cutting and flush-cutting applications up to a depth of 16 inches
Husqvarna general-purpose blade consists of 15 flat-top diamond teeth with a segment depth of 0.295 inches Computer-engineered, laser-cut blades are 9 inches in diameterHusqvarna laser-cut blade has a limited warranty Sold in 5 pack for greater savings