10-Pack SDS Plus 3/16" x 6" Rotary Hammer Drill Bits, Carbide Tipped for Brick, Stone and Concrete

I bought a pack of ten, thinking as skinny as they were, I was bound to break a couple, but the first one completed the job through some very tough concrete, never broke, and drilled the last hole as fast as all the others.

Fast shipping. Product worked well.

I was screwing some boards into my foundation (garage wall concrete). I used Tap Con screws. I start with a Milwaukee 3/16 carbide tip bit. I went through a couple of those. They were good for about 5 or 6 holes each. One eventually bent, and the head melted on the other. I then tried a Tap Con bit which was not up to the task.Theni ordered these expecting ai would need a few. These look impressive and seem to hold up. But for my purposes, drilling about 3 inches into solid concrete, they did not work. I could only get in about a half inch. I went back to the Milwaukee and it worked the same as before.These do seem like sold bits, but just not for solid concrete. They're probably fine for brick etc.

They work good I drill 16 holes and no problems I Took my time applying small pressure letting the drill and drill bit do the work

arrived on time as described

Absolutely the best way to pilot blue screws. In concrete, they cut like a hot knife through butter.Don't be misled by discount bits. These are the least total cost solution by lasting longer and drilling faster.

Llegó bien empacado y en excelentes condiciones.

On each of the ten drill bits, the hardened tip broke off after boring two or three holes, leaving no ability to use the bit further. My experience with Bosch bits is they last ten times longer and only cost twice as much as these. These bits were inexpensive and you get what you pay for.

Son de buena calidad no le piden nada a unas de marca reconocida