1x12 SDS-Plus Rotary Hammer Drill Bit, Carbide Tip 4-Cutter for Brick,Stone & Concrete, Packed of 2pcs.

4 cutter head worked very well on old brick. Price was good and product seems well made.

Durability and functionality is the best way to describe this bit

I USED ONE OF THESE DRILLS TO BREAK THROUGH ASPHALT. SOME ONE PAVED PART OF OUR YARD. SOME ONE ELSE COVERED THE AREA WITH SOIL ABOUT 5 INCHES DEEP. I WANTED TO BREAK THROUGH THE ASPHALT SO PLANTS COULD ROOT BETTER. I DRILLED SEVERAL HOLES CLOSE TOGETHER AND PULLED UP PIECES OF THE ASPHALT. THE DRILL WAS NOT DULLED AND WENT THROUGH THE ASPHALT EASILY.

The product and price are good, but the shipping was a bit slow.

ExcelenteLa use para atravezar un muro de hormigón de 31”, corta rápido100% recomendada

Was exactly what I needed

Drilled through 4” concrete like butter

I'm impressed! This pair of 3/4x12" Hammer Drill Bits arrived quickly and are much better quality than the bits available at the Orange or Blue box stores, and at a fraction of their price. I appreciate the engineering of these Cross-X carbide tips with their double-helix shaft ... just so obviously better than the single Tee points and single helix you see on other bits ... even (so-called) "premium" bits. I only need to drill a single hole in my house slab, but I ordered the pair because buying these costs less than renting a hammetr drill and a single bit for four hours.