Review on Diablo DMAMX1390 SDS Max 4 Cutter Carbide Tipped by Andrew Cramer

I only do housework so I can't say if this bit will stand the test of time but I can say it was my first time with a big hammer drill and than this one massive drills showed up, it was pretty scary. The project involved vertically drilling a seven inch thick floor slab and foundation in my garage to install 1 1/4" PVC. While it's slow, it just works and grinds the concrete like butter.