3/4 Inch x 12 Inch SDS Plus Rotary Hammer Drill Bit, Carbide Tipped for Brick, Stone, and Concrete Version 2 (3/4" x 10" x 12")

Works all with a hammer drill for penetrating concrete block. Excellent quality!

drilled thru 8 inches foundation no problem !

I have an eight inch poured concrete walk-out basement wall that I needed to drill through to drain water seeping through the floor-to-wall joint and a crack or two. My normal 1-inch chucked hammer drill bit unchucked itself every 10 seconds, making 2-3 inches take more than 2-3 hours. So I was forced to buy an SDS hammer drill and this SDS bit to reduce the swearing and avoid destroying the smaller chucked drill which still was far more convenient with small bits. This bit took about a minute to make each of two holes through the wall with the required SDS drill. So I gladly recommend it and an SDS drill required to use it.

This bit made fast work of boring a hole through a 10 inch thick 40+ year old concrete slab. Unfortunately, it wasn't long enough to hit the footer buried below. I ended up also purchasing a 22 inch bit to finish the hole. The bit is a perfect fit my Bosch Bulldog SDS-Plus rotary hammer drill.

Can't complain. Attached this bit on my Makita SDS plus hammer drill and had no problem drilling through block walls.